Carrying a water bottle of non-food graded materials going to cost a lot. Storing water in such bottle could lead to many health issues. Also carrying hot or cold water which could last for at-least 24 hours is highly impossible in traditional normal water bottles.

Thanks to the invention of thermos flasks which makes it easier for you to carry hot as well as cold water which could last 24 hours easily.

If you are one of those who is looking for best thermos flask, then you are in the right place. Today in this post we will be covering the exact top thermos flask reviews along with the complete buyer’s guide. At the end of reading this article you will surely be able to find the top thermos flask for your daily usages.

15 Best Thermos Flask In India 2021

Finding the best thermos flask among the crowd, especially when there are plenty of thermos flasks available on the internet to buy from is really challenging task, especially when you know very little about the thermos flasks.

There are plenty different types of thermos flasks available in the market. However, when it comes to insulated flasks, all insulated flasks work on the same kind of basic principle. All of them use a double-wall construction, separated by an airless cavity, which in-turn creates a thermal insulation layer which keeps the liquids hot for a longer period of time.

In the same way the thermos flask also keeps the drinks cold by using the vacuum principle which houses a double-walled flask to keep the drinks ice-cold for up to 24 hours even in a very hot sunny day.

Which is the best thermos flask? – Our top 15 picks

1. Milton Smarty Stainless Steel Water Bottle Thermos Flask

The milton thermos flasks are one of the well-known thermos flask brands. The milton thermos steel water bottles are made from 18/8 stainless steel which are constructed with insulation double walled vacuum water bottle which are perfectly designed for maximum temperature retention which keeps your drinks hot or cold for a longer period of time without altering their temperatures.

The good part of this milton thermos flask is that it keeps the taste and nutrition’s of your drinks intact for a long period of time. This makes them the perfect companion for storing any kind of beverages of your choice anytime.

The milton thermos flasks are made of 100% food grade stainless steel which is non-toxic in nature. The milton ensures that their thermos flasks are designed not only look-wise or aesthetic-wise but also healthy-wise which can be used for a longer period of time which doesn’t harm your health.

Key Features:

·      720 ml Stainless Steel Water Bottle

·      Multi-purpose Water Bottle for storing both Hot and Cold Beverages

·      Made up of 100% Stainless Steel 18/8 Food Grade from both Inside and Outside

·      Easy to Clean and Maintain

·      Unique Leak Proof Technology, No Leakage and Odor Free

·      Double Vacuum Insulated Body

Milton is one of the leading manufacturers and marketers of houseware products all around the world. Milton is one of the companies owned by Hamilton Group of Companies.

2. Cello Swift Stainless Steel Thermos Flask

The next in our is the cello swift stainless steel thermos flask which is one of the thermos flasks from cello which has been striving to create products which are perfect for day to day use which enhances the lifestyle of its users.

Cello offers an unmatched range of different capacities of stainless steel bottles that are made of premium quality stainless steel which is 100% food grade and are leak proof.

One such a model is the cello swift stainless steel flask which is designed in a classic shape with a small mouth and neck, which helps to increase the efficiency of the flask by restricting the escape of the heat from inside.

This design helps to protect the temperature for hours for a longer period of time by keeping cold drinks icy cold and hot beverages piping hot. This cello thermos flask is designed with the modern click press inner lid which helps to seal the heat from inside and helps to retain the temperature all the time same as when you had it while pouring into the thermos.

Key Features:

·      1000 ml Stainless Steel Water Bottle

·      Available in multiple capacities of 350 ml, 500 ml, 750 ml, 1000 ml, 1500 ml and 1800 ml

·      Double Wall Stainless Steel Double Insulated Flask

·      Suitable for both Hot and Cold Beverages

·      Maintains Temperature of the Liquid or Beverage for up to 24 hours

·      Houses Thermo Seal Technology and 100% High Quality Steel of 18/8

·      Sleek and Compact Design

·      100% Vacuum Insulated Steel Body

·      Leak Proof Design

This cello thermos flask is made with Thermo-Seal Technology, meaning, the superior insulation high performance vacuum technology and premium food grade body keeps the beverages for a day hot and cold. The thermoseal of cello ensures you of higher performance for heat retention.

The air tight threaded cap of cello has the high-quality silicon seal which is combined with threaded mouth ensures you of there are no leakages from the bottle or bottle cap. This technology is airtight and prevents all kinds of water leakages even after shake or left down-side or along-side.

3. Milton Duo Deluxe with Handle 2000 Thermos Flask

If you are looking for a thermos flask with bigger storage capacity then this the one for you, the milton duo deluxe vacuum insulated thermos flask which offers 1860 ml storage capacity and comes with a unique handle for easy holding and carrying anywhere you want.

The milton duo thermos flask is the best vacuum insulated thermosteel bottle which comes with a unique easy to drink design and shape which is equipped with a unique finger grip handle carry handle which makes it easier for you to lift and carry your bottle with beverages with ease.

The vacuum insulation of milton duo thermos flask helps to keep your beverages hot or cold as it is for a longer period of time without altering their temperatures. This means your beverages will be kept same way you need all day through out. In addition, the bottle ensures that the taste and nutritive value of your drinks stays in-tact for a longer period of time.

Key Features:

·      1860 ml Storage Capacity Vacuum Insulated Bottle

·      Unique Finger Grip Handle for Easy Lift and Carry

·      Keeps Beverages Hot and Cold for up to 24 Hours

·      Made with High-Quality 304 Grade Stainless Steel

·      100% Rust Proof and Leak Proof

·      Retains all Nutritive Values of Your Poured Beverages

·      Bottle is Hygiene and BPA Free

The other good feature of the milton duo thermos flask is that it is 100% hygiene and BPA free. This is great and gives you the 100% assurance of healthy drinking, no loss of nutrition’s from your beverages and safe drinking.

As this milton thermos flask is rust proof and leak proof, you can carry it anywhere of your choice such as in the car, exercising, office, outdoor trekking, school, running, jogging or picnic, it’s perfect. Since it is also condensation free it offers you easy gripping and easy holding. 

4. Cello Flip Style Stainless Steel Bottle Thermos Flask

If you are looking for a flip style thermos flask then cello flip style stainless steel bottle thermos flask is the best one for you. The cello thermos flip style thermos flask is made of thermos steel technology. This ensures that you can carry your favorite beverages all day at the same temperatures whether its hot or cold offering you the fresh beverage.

The insulated double walled vacuum cello flip style stainless steel bottle thermos flask helps to retain the same temperatures for a prolonged period of time without compromising on retention of heat or heat dissipation from the bottle.

Thanks to cello range of stainless steel products come which come with a unique Vacusteel Technology. This means that the insulation layer provides better performance and you can keep your beverages hotter to colder for up to 24 hours a day under ideal conditions.

Key Features:

·      1000 ml Stainless Steel Thermos Flask

·      Double Walled Dispenser Stainless Steel Flask

·      Houses a Cap cum Cup for Drinking Hot Water

·      Houses a Convenient Strap to carry the Thermos Flask

·      Double Wall Insulation

·      Superior Quality of Stainless Steel

·      Extra Protection

·      Fabricated inside and outside with Food Grade Stainless Steel Material

·      It includes a Liquid Tight Cap makes it Leak Resistant

·      Tough and Durable

Another good part of cello flasks is that they are created with airtight leak proof tops. They are composed such that flask cap impedes drink to turn out from the container which avoids the spillage of your favorite drink.

5. Cello Lifestyle Stainless Steel Bottle Thermos Flask

If you are looking for a small thermos flask of 500 ml then the cello lifestyle stainless steel bottle thermos flask must be your first choice. This thermos flask is perfect to carry to your office especially when you are carrying tea or coffee. The bullet vacuum flask ensures you of keeping the drinks hot for a longer period of time.

The thermo-seal technology of cello lifestyle stainless steel bottle thermos flask ensures you of offering high-quality superior insulation high performance vacuum technology. The premium food grade material ensures further that your beverages are hot and cold for hours day long no matter where you are.

Key Features:

·      500 ml Small Thermos Flask

·      Double Wall Dispenser Vacusteel Flask

·      Threaded Cap 100% Leak Proof Design

·      Unbreakable VacuSteel Liner and Outer Shell

·      Retains Flavor and Freshness

·      Stain Free, Odor Free and Food Grade Material

·      Keeps the Beverage or Drinks Hot or Cold for 12 Hours

·      Made with Thermo-Seal Technology

·      Made for better Heat Retention

The cello lifestyle stainless steel bottle thermos flask is also available in 350 ml, 750 ml and 1000 ml.

6. Borosil Stainless Steel Hydra Trek Vacuum Insulated Thermos Flask

If you are looking for a trendy and fancy thermos flask then you must choose the borosil stainless steel hydra trek vacuum insulated thermos flask. This is going to be your perfect companion for every day carry immunity boosting beverage on the go so that you can enjoy your favorite drink anytime and anywhere.

The good part of the borosil hydra trans flask is that it keeps hot drinks hot and cold drinks cold, for up to 24 hours, whether it’s a piping hot coffee or a chilled iced tea. You can enjoy your favorite beverage all time all day long.

The borosil hydra trans flask is made with 100% food grade, 18/8 high-quality rust proof steel which makes it perfect for healthy drinking. The cutting-edge technology of borosil hydra trans flask is designed with insulated double-walled vacuum with copper coating for better temperature retention.

Key Features:

·      500 ml Hydra Trek Thermos Flask

·      Keeps Beverage and Water up to 22 hours Hot or 24 hours Cold

·      Insulated Double Wall Vacuum with Copper Coating for Maximum Temperature Retention

·      Non-Leaching and Toxin Free for Healthy Drinking

·      Inner Wall: SS 304 Grade and Outer Wall: SS 201 Grade

·      Available in 500 ml, 700 ml and 850 ml

·      Hydra Flask are BPA and Phthalate-Free

·      1 Year Warranty on Product

The borosil stainless steel hydra trek vacuum insulated thermos flask is non-leaching toxin-free. This means that all the parts of hydra trek flask are BPA and Phthalate-Free. This ensures you of the beverage stored will be free from any toxins or chemicals which can migrate into beverage.

7. ORPIO Stainless Steel Vacuum Insulated Coffee & Tea Thermos Flask

If you are looking for a cool and stylish looking tea or coffee mug then this could be the one you must go for. The ORPIO stainless steel vacuum insulated coffee & tea thermos flask is specifically designed for carrying hot or cold tea or coffee no matter where you go. Whether it is an office or you are going on a trekking its perfect companion for you.

This is a stainless steel double-wall design coffee or tea mug which keeps your drink hotter than traditional ceramic or porcelain mugs, without burning your hands. This is all because of unique design which offers the internal air gap to the outer wall and handle.

The ORPIO stainless steel coffee cup is made of high-quality materials, which are non-sticky, and easy to clean. This is perfect for those who are into sports as it is portable, lightweight, durable, and heat & cold resistant.

Key Features:

·      500 ml Stainless Steel Coffee and Tea Mug

·      Vacuum Insulated Travel Tea and Coffee Mug

·      Keeps Beverages Old for 6 hours and Hot for 4 hours

·      Sipper option along with wide mouth

·      Vacuum Stainless Steel Thermal Insulation Water Bottle

·      Long Term Temperature Preservation

·      Easy to Fill and Clean

·      Leak Proof Lid

·      Adjustable Handle Insulated Exterior Design

The ORPIO coffee mug is equipped with a leak-proof lid which ensures that there is no any leakage from the ORPIO coffee mug. Moreover, the bottom of the coffee mug has a non-slip silicone pad which prevents it from sliding and tipping over.

This ORPIO 500 ml coffee mug is having a drinking capacity which will full-fill your day-to-day coffee or tea need and the lid can be open or close by one hand. It also houses a handle on the lid which makes it easier for you to carry anywhere. You can also easily remove the lid by twisting for quick filling and cleaning.

8. InstaCuppa Thermos Bottle Vacuum Insulated Coffee & Tea Thermos Flask

If you are looking for a unique thermos flask which is available in multiple options that offers you the option of carrying cold, hot and other kinds of beverages such as coffee or tea, then you must look for InstaCuppa thermos flasks. The InstaCuppa are one of the trendsetters and stylish in design.

The InstaCuppa is crafted with a unique ultra-modern design. Along with this the instacuppa houses an advanced temperature control with a double-wall, vacuum-insulated design which helps to keep any beverage hot for up to 12 hours and cold for up to 24 hours. This makes it a perfect companion for you especially when you are on the way to your gym work out or cycling or jogging.

The instacuppa is designed to eliminate any condensation and offers an improved grip and control with its innovative dual-layer bottles.

Key Features:

·      1000 ml Double-Wall Thermos Flask

·      Vacuum Insulated Stainless Steel

·      Ultra-Modern Design

·      Advanced Temperature Control

·      Eliminates Condensation

·      Leak-Proof and Eco-Friendly

·      Keeps Beverages Hot for up to 12 Hours

·      Keeps Beverages Cold for up to 24 Hours

·      Retains Original Flavors, BPA Free and Rust Free

·      18/8 Stainless Steel of Premium 304-grade Food Grain Material

The InstaCuppa Thermos Flask is eco-friendly and leak-proof too. This thermos flask is easy to remove and clean. This house a large crew on lid which provides a faster access to water inside and won’t spills any drop of water when its tipped upside or alongside.

With the advanced temperature retention technology of instacuppa thermos bottle helps you to ensure that your beverages will remain in perfect condition for a longer period of time. You can able to keep your beverages Hot up to 12 hours and Cold up to 24 hours.

9. InstaCuppa Vacuum Insulated Coffee & Tea Sipper Lid Thermos Flask

If you are looking for a small thermos flask with sipper lid to carry your coffee or tea, then you can go for InstaCuppa vacuum insulated coffee & tea thermos flask.

This instacuppa thermos flask comes with 400 ml capacity in the form of tea or coffee travel mug which designed with a double walled stainless steel, sipper lid and silicon grip. The best part is it available in more than 10 colors and in 470 ml capacity too.

The main advantage of this thermos flask is that it comes with an advanced temperature control which is powered by a double walled vacuum insulation which ensures that your beverages are Hot up to 6 hours and Cold for up to 12 hours. Along with this a complete care is taken towards health and safety by offering BPA free and designed with plastic food grade.

Key Features:

·      400 ml or 470 ml Small Stylish, Sleek and Modern Design Travel Mug

·      Matte Exterior Finishing for Perfect One Hand Grip

·      Leak and Spill Proof

·      Once Click Open and Close Unique Sipper Lid

·      Perfect Anti-Slip Grip

·      Keeps Beverages Hot for 6 Hours and Cold for 12 Hours

·      BPA Free, Rust Free and Keeps all Original Liquid Flavors

·      18/8 Stainless Steel and Double Vacuum Insulated

This instacuppa thermos travel mug looks sleek, stylish and modern. The thermos has a matte exterior finishing which gives this tumbler a premium look. This instacuppa coffee mug will perfectly fit into your hand which is easy to carry. The Stainless Steel is 18/8 which is made from premium 304 grade.

The InstaCuppa Sipper Lid thermos flask is leak and spill proof. This is designed with one click open and close unique sipper lid which is pretty easy to use and operate.

10. Cello Puro Steel-X Benz Thermos Flask

If you are looking for one of the trusted cool looking thermos bottle flasks then Cello Puro Steel-X Benz Thermos Flask is the one you must go for. This comes with outer plastic with PU insulation water bottle which is of 900 ml. There are 5 colors that you can choose from namely, black, white, blue, red and pink.

As said the inner body is made of steel and the outer body is made of plastic with polyurethane foam insulation layer in between for storing cold beverages. However, the downside of this thermos bottle is that it doesn’t come with a heat retention capability, meaning, it is not capable of keeping the beverage hot for a longer period of time.

Key Features:

·      900 ml Stylish looking Thermos Bottle

·      Steel Inner Body and PU Plastic Outer Body

·      Leak Proof and BPA Free

·      Perfect for Carrying Water

·      Capable of Flavor retention

·      Suitable for Outdoor Sports

·      18/8 Stainless Steel Premium Steel

·      Heat Retention Capacity up to 4 to 5 Hours

·      Environment Friendly and Easy to Clean

This thermos flask which is one of the PU Insulation Water Bottles out there in the market which is BPA Free and nontoxic, and it is also easy to clean. This is perfect and suitable for all outdoor sports such as hiking, camping, fishing, boating, yoga or gym fitness.

The cello puro steel benz-x water bottle is fully resistant to oxidation and rust, which never leave a metal taste and is more durable and long-lasting.

11. Borosil Stainless Steel Hydra Bolt Marble Thermos Flask

The next in our list is the Borosil Stainless Steel Hydra Bolt Marble Thermos Flask which is one of the unique thermos flasks among the rest of all. The Borosil Hydra Bolt thermos flask is made of marble finish which gives it a stunning, modern and unique looks. However, this is still made of Stainless Steel with 750 ml capacity with white color.

The borosil hydra bolt thermos flask is curvy silhouette design which makes it unique thermos flask. This thermos flask is made with 100% food grade 18/8 quality rust proof steel. The cutting-edge technology of borosil hydra bolt is designed with insulated double-wall vacuum with copper coating which ensures maximum heat retention which keeps your beverage to be hot and cold.

This ensures you of toxin and chemicals free as all the plastic parts in the hydra flask are BPA and Phthalate-free. The Stainless Steel 304 grade is 100% rust proof SS inside and outside. This thermos flask is available in both 500 ml as well as in 750 ml.

Key Features:

·      750 ml 304 Grade Stainless Steel Marble Finish

·      100% 18/8 Food Grade Material

·      Double Wall Vacuum Insulation with Copper Coating

·      Keeps Beverage Hot for up to 24 Hours and Cold for up to 24 Hours

·      1 Year Warranty on Product

·      Suitable for Office, School, College, Gym, Picnic, Home and so on

·      Non-Leaching Toxin Free and Rust Free (i.e., BPA and Phthalate Free)

·      Available in 500 ml and 750 ml

·      Easy to Pour Design

·      Condensation Free Exterior

The mouth of borosil hydra bolt thermos is designed so specific that enables drip-free sipping as well as wide enough for ice-cubes. The exterior is specifically crafted to ensure that it remains condensation free which offers moisture free and dry holding. The Marble Finish of borosil hydra bolt thermos makes it unique and good looking from all angles.

12. Milton Duo DLX 1000 Thermos Flask

The next in our list of best thermos flask is Milton Duo DLX 1000 Thermos Flask. This is yet another amazing milton flask which are thermosteel bottles which makes pouring completely hassle-free and spill-free for you.

This milton thermos flask is made of thermosteel 100% stainless steel of capacity 1000 ml. This thermos flask is made of double wall insulation type which ensures that it maintains the temperature which keeps the liquid hot and cold for up to 24 hours.

This thermos flask offers leak proof storage and is best suitable for usage in Gym, Sports, Schools and Outdoors. The milton thermos flask comes with 1 year warranty. The warranty does not cover damages resulting from accidents, mishandling or tempering with the mechanism.

Key Features:

·      1000 ml Storage Capacity

·      100% Stainless Steel Thermos Flask

·      Double Wall Insulation Type

·      Keeps the Liquid Hot and Cold for up to 24 Hours

·      1 Year Warranty on Product

·      Tough and Durable 18/8 Quality Stainless Steel

·      Pre-Condition Bottle with Hot Water

The milton thermos flask is a vacuum insulated with inner and outer 18/8 stainless steel which is capable of keeping your beverages hot and cold for up to 24 hours. The Cone shaped or mouth shaped bottle makes it more comfortable for drinking with ease.

13. Greenchef Kiyo Thermosteel Duo Deluxe Thermos Flask

Greenchef is yet another home and kitchen appliances company that manufactures all kinds of appliances, cookware and kitchen accessories including thermos flasks. One such model is greenchef kiyo thermosteel duo deluxe thermos flask.

This greenchef thermos flask is made up of three-layered stainless-steel materials, one being the 304-grade stainless steel, second one being the 201-grade stainless steel and the third being the ultra-bright layer which is vacuum insulated which virtually eliminates the temperature range by creating an airless vacuum space between two stainless steel walls.

The greenchef kiyo thermosteel thermos flask is having a liquid storage capacity of 750 ml and the 3-layered stainless steel helps to keep the beverages hot for up to 12 hours and cold for up to 24 hours. The bottle is made of stainless steel which is not only durable, but also user-friendly and highly functional.

Key Features:

·      750 ml Thermosteel Stainless Steel Thermos Flask

·      Rust-Free and Condensation Resistant

·      Keeps Beverages Hot up to 12 Hours and Cold up to 24 Hours

·      1 Year Warranty on Product

·      Available in 500 ml, 750 ml and 1000 ml

·      3 Layered Stainless Steel Bottle (304 Grade Layer, 201 Grade Layer and Ultra Bright Layer)

·      Leak Proof and Vacuum Insulation

The greenchef thermos flasks are designed to be airtight leak proof tops. They are designed in such a way that the bottle cap impedes drinks to turn out from the container which avoids the beverage spillage from inside to outside. This makes it easier to carry your bottle in your office bag, travel bag, school bag and so on.

The greenchef thermos flask is made of high-quality stainless steel which makes it as one of the best bottles for hygienic conscious people. This bottle is highly resistant to rust, thanks to the 3 layers of greenchef, viz., 304 grade, 201 grade and ultra-bright stainless steel layers.

14. Greenchef Alta Stainless Steel Thermos Flask

The next in our list is yet another thermos flask from greenchef which is greenchef alta stainless steel thermos flask which comes with spinner design for easy drinking. This thermos flask has a capacity of 600 ml liquid storage which is more than sufficient for your daily needs.

The best part of this thermos flask is the cool looking design which offers spinner for easy and convenient drinking. This greenchef thermos flask is made of 2 layers of high-quality stainless steel, one being the 304 grade stainless steel and the second being the ultra-bright layer. The greenchef bottle helps to keep the nutritional value of water to remain intact inside the water bottle for a longer period of time.

The greenchef alta stainless steel bottle offers you one of the best leak proof technologies. This thermos flask houses a screw mechanism cap which keeps the bottle airtight and leak proof which are specifically designed to ensure tight-fitting with the help of a cap. This further ensures you of any water spilling inside your bag.

Key Features:

·      600 ml Stainless Steel Water Bottle with Spinner

·      304 Grade Stainless Steel Water Bottle

·      2 Layer Stainless Steel Thermos Flask (304 Grade and Ultra Bright Layer)

·      Unique Mouth Design and Spinner for Easy Drinking

·      Airtight and Leak Proof Design

·      Rust Proof with 304 Grade Stainless Steel

The 304 grade stainless steel of greenchef alta water bottle is so tough and durable that it offers rust free from inside as well as from outside. The 2 layers of stainless steel are perfect in ensuring corrosion resistant. This means you can easily store water or any other kinds of beverages easily in the refrigerator.

The greenchef alta water bottle offers you easy to sip and easy to carry option which makes your drinking water easy and anywhere travelling easy. The sipper option helps to save water by avoiding any spillage while drinking water. This also helps in easy carrying in bag wherever you go either gym or office or school, it’s just perfect for you.

15. Shivexim Double Wall Vacuum Insulated Stainless Steel Thermos Flask

The shivexim thermos flask is one of the cheap thermos flasks which is double wall vacuum insulated stainless steel flask. This is perfect when you are travelling and comes with sipper for easy drinking. This thermos flask is available in 450 ml storage capacity and comes with 3 colors, viz., Blue, Black and Red.

The bottle is made of 304 grade stainless steel of high-quality steel and designed with air-vacuum technology to keep your drinks or beverages hot and cold for up to 6 to 12 hours. The Outside of the bottle is made of 18/8 stainless steel and BPA free for healthy and safe drinking.

Key Features:

·      450 ml Cheap Stainless Steel Thermos Flask

·      Double Wall Vacuum Insulated Thermos Flask

·      BPA Free and Sipper Feature Bottle

·      Available in 4 Colors (Blue, Red, Black and Red)

·      Keeps Drinks Hot and Cold for up to 6 to 12 Hours

·      Air-Vacuum Technology and 100% Leak Proof

·      Made from 18/8 Stainless Steel and 304 Grade Stainless Steel

The shivexim thermos flask is made of 304 grade stainless steel and carries a Strainer for Leaf Tea and other Herbs. The Outside of the bottle is made of steel and silicon print on the outside which gives modern design looks and.

Conclusion

Hope our review guide on best thermos flask has given you all the inputs to find the best thermos bottle for your daily usage. Our research and analysis on these bottles have helped us to identify the top thermos flask for your daily usage.

Before you buy any thermos flask, make sure that it offers temperature retention technology that allows the bottle to keep your drinks and beverages hot and cold at-least for 12 hours if not for 24 hours.

We would like to know your thoughts and reviews, Please tell us in comments below.

·      Which is the best thermos flask for you?

·      Would you like to add any thermos flask to our list?