Optima 350 Thermosteel Hot and Cold Flask, 340 ml, Silver | ISI Certified | Vacuum Insulated | Rust Proof | Leak Proof | Tea | Coffee | Juice

I have been using this for over three years now. I like to keep my morning coffee in this and slowly take it over an hour. This is excellent, retain heat well, easy to clean. It was very leak-proof when new, but now with a few falls and dents, I have to be slightly careful when travelling with this.

Nice flask with good quality. Easy to use and keeps beverages at the right temperature for long hours.

Good quality, maintains heat for nearly 6 hrs

Best bottle Fits in car dash Insulation is best Storage in cap Best design which provide good grip

Really impressed with this flask. I tested it for 11 hours and the water was still properly hot. The build quality feels sturdy, it’s leak-proof, easy to carry, and looks premium too. The outer body doesn’t heat up, which is a big plus. I would honestly recommend this over Borosil Coffee Mate or some Milton coffee mugs because their caps are not durable and can break if the bottle falls once. This one feels much more sturdy and reliable for daily use.

I used it for keeping tea but it gets cold in about two hours so if you need it to store for longer hours try to look for something else.

Quite good Heat retention. The outside never get's hot , or leaks heat , better than most in this price range . Good quality, material .so less worry about failure. Good seal , doesn't leak . I have used it before 1 year. Upto expections. Keeps vapours tight . It doesn't have that drinking straw etc but that's good cuz it gives full seal and air tight. So it open with pressure which is good . Very less complains from me. So Heat retention 9/10, sealing 9.5/10 .. that's all u need .

Really nice product. Good to use packing gravy for lunch box..

TOO SMALL AND NOT TOO HOT

Keep things hot for longtime.

ممتازه وعمليه

Good

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