mattwrote a review of CamelBak Podium Chill Insulated Water Bottle - 21oz on August 19, 2015
Familiarity: I've used it several times
For my mtn bike ride that lasts 45min, this does great! I put a couple cubes of ice to keep it extra cool. By the time I'm done the ice has melted but the liquid is refreshing. For longer rides I still get to the point where the water is air temp, but it's much better than my non-insulated water bottle that was warm by the time I hit the trail head and was undrinkable after an hour. Keep the top unlocked so you can just squeeze while you ride, easy to twist while I ride if I do keep it locked.