Review on ☕ Graphite Hydro Flask Travel Coffee Stainless Steel Flask, 20 oz by Troy Williams

No leaks (you can actually ruin the seal and bottle by twisting a waterproof cap down too tight), no problem drinking and ice stays ice cold for hours. There is one review where they complain about getting your nose wet. The solution is simple: just tilt your head back a little more and let gravity push the liquid onto your face. Ha ha. One thing I have to say with all these negative reviews, if you have a broken bottle, send it back or get a replacement. And it's not a dewar. There is air between the two walls and you will feel very little temperature difference depending on the temperature of the liquid inside. A heat exchange takes place.