Rehydrate Pro Double Wall (750ml) Insulated Stainless Steel Water Vacuum Bottle Flask. Best, Coolest, and Hottest Drink Holder + Bonus 'Flip N Sip' Sports Cap with straw + Silicone Bumper Coaster

This is very similar to many other stainless steel insulated flasks on Amazon, but just a bit more premium in a couple of ways. So my review is very similar to the one I did for the 500ml super sparrow flask.The flask itself is excellent. It seems like good quality stainless steel, no dents, nice finish. Insulates very well, as promised.The normal cap is fully stainless steel, so easy to clean and insulates well (I don't like the ones with the wood top that get stained and mouldy if not taken care of, cleaned and oiled).The sport cap which has a straw and mouthpiece allowing you to drink without unscrewing the cap is very useful and I use it most of the time. Because it's all plastic, it doesn't clean as easily or insulate as well, but it's convenient if you're frequently sipping from the flask. It is almost identical to the one on the super sparrow flask as far as I can tell, although the colour is different according to the colour you chose for the flask, whereas super sparrow is always black.Other reviews have said that it leaks badly using this cap but I did not find this to be true. There is a small hole in the cap that is to allow air in to the flask when you are sipping, but when you close the mouthpiece, there is a little plastic bump on the mouthpiece that blocks off this hole. So long as you always close the mouthpiece when you put the flask away, it does not leak. However, I did find that if the bottle is filled with cold liquid and stored upside down or on its side, the top of the flask and the cap get very cold and condensation forms on it. This left a little bit of water in my bag when I took it out, but as far as I can tell, the water from the inside did not manage to leak out. That said, I have been using this bottle one month only, so I don't know how long the little rubber seal will last. I think they could have made a much better cap design to fix this issue by using a simple one way rubber valve type seal so that air can be sucked in but water can't come out. Such a valve is very common in standard flasks.The other differences with the super sparrow are that there is a silicone colour matched bumper coaster on the bottom so it sits softly on/against any surface without getting scratched or scratching. It also has a kind of smooth plastic laminate coating on the outside rather than just exposed stainless steel. I suppose this would also make it look pristine for longer, especially if you got a coloured one. Coloured coatings tend to be scratched off very quickly and this laminate coating would protect that. It also has a little white area that you can draw/write your name on. It does not come with the pouch or little cleaning brush that the super sparrow comes with.All in all, I prefer this one to my super sparrow flask, but unfortunately it doesn't come in 500ml size, so I usually use this 750ml big one at home/at work, while I use the 500ml super sparrow when out/going abroad.1 year update: just under a year after purchase, the seal on the bottom of the flask has come off. Not terribly pleased.

After searching and searching for the perfect bottle I decided on this one.I'm glad I did splash out on this bottle.The colour is great and the bottle is perfect. It doesn't leak and keeps water cool.I did lose the little widget under the straw but had another cheap bottle that leaks and took the little bit out of that and it's back to being perfect.Would recommend this bottle. Only thing I would say is if the seller could supply more of the little widget things so if you do lose one you can replace them

This product is stylish and works really well. Would recommend putting really cold water in to start. This guarantees cold water for maximum time. Use it for both cold water and warm coffee. No leftover coffee flavour. Also the drinking straw is great for the gym or on the go. I tend to use the straw for cold and the proper cap for warm. Good product would highly recommend

Really nice bottle - sturdy and with a good capacity. Keeps liquid cold for extended periods of time - a good investment for the summer!

Keeps coffee hot for hours. I use it for hiking.

Its a nice bottle but it does not keeps the drink for longer tgan 1 hour.

I use mine everyday, work, gym and travelling, keeps cold for a long time and my Tea was too hot for too long when i used it as a flask!

Love the way it looks, keeps drinks cold no matter the weather, very happy with my purchase! Also love the fact you get an extra straw just encase