CamelBak Podium Ice 21oz Insulated Water Bottle Zero-Loft aerogel insulation keeps water cool 4 times longer than standard bike bottles, and it keeps the bottle lightweight Podium Ice also keeps warm beverages warm during cool-weather rides Bottle is made of taste-free, BPA-free and BPS-free TruTaste polypropylene JetValve delivers high water flow effortlessly and seals shut automatically CamelBak Got Your Bak Guarantee: If we built it, we'll Bak it with our lifetime guarantee