Zenbo 30 oz Vacuum Insulated Tumbler with Handle - Leak Proof Lid & Straw - Keeps Drinks Cold 24 Hours - Sweat Proof & Dishwasher Safe - Perfect for Travel, Gym & Outdoor Activities

I must’ve spent days on end researching to find the best water tumbler and also ordered two others to try out. This is the by far the best one for me for a few reasons. One it holds 40 ounces of water which I really like. It definitely keeps your drinks cold and I love the feature, where if you take the straw out the bottle seals tight. Plus the top is also a screw on which makes it very tight and non-leaking. It fits perfectly in my cupholder and the pink green one is very pretty. Now if I wanted to be really picky, I would say the handle is a little rough and could be a bit softer but it’s not horrible. The one thing I wish they could change is that the straw is so big. I like a thinner straw, but that is just my preference. I also for some reason have a hard time getting the last little bit of water out of the bottle with the straw. Still I would buy again and recommend to anyone and everyone. Oh, and I also had no problem keeping ice frozen in it.