It's a bottle, it holds the water and keeps it hot or cold. I'll take your entire stock

21 oz is more than enough to get you through the day with a full load of water. I've dropped it a few times with barely any noticeable damage, and the stainless steel inside after a few goes is well, stainless. Water stays cool all day as well, and the 21 oz fits into most backpack carriers. 10/10 would recommend.

It's actually my second one. My first one has dropped out of my backpack on the parking lot and therefore got too damaged to properly cool water. Used it quite a long time though, but it was time to get a new one. Went from the middle size to the smallest size. I loved the bigger one for its capacity but portability was easier with this size.

It really keeps your drinks cold for hours and it’s a pleasure to use it. I prefer a water bottle over a glass of water and I automatically drink more water. Even if I didn’t watch LTT, I would still get this bottle for its quality and because I like the motherboard design. It fits my personality.

The best water bottle I've ever seen. I thought it was a good water bottle, but I was wrong, it was the best water bottle. It keeps your drinks so cold that it's sometimes too cold lol and it lasts all day at a chill temperature. I can't recommend it enough, words can't describe the quality and precision. And that it super cool! I love the design soooo much.

This is now the second bottle I have ordered (1st was 40oz) and I am thoroughly impressed with the new updates to the bottle and lid. The cool thing about the 64oz that I have now is that you can hold it in one hand without a separate handle either by the body or by the neck of the bottle. 10/10 would buy again if anything ever happens to this one!