Jeff Guest wrote a review of Hydro Flask 40oz. Wide Mouth Water Bottle on April 18, 2014
Familiarity: I've put it through the wringer
This is my second year using this bottle and I think it is great my uses. During the summer when I go down to the Utah desert to do some slot canyons I fill this thing full of ice and the rest with water and it will last a good 48 hours before getting to room temperature. Did I mention I leave it in the hot car all day? I love my cold water so this is a great bottle! I hear I doesn't hold Hot stuff as long, but for my use I'm giving it 5 Stars!
The cap does have a Lifetime warranty through Hydro Flask, so If you ever drop the bottle and break the cap just contact Hydro Flask and they'll send you a new one for free!