Big enough for a whole day on the river or trails, the Hydro Flask 32oz Wide Mouth - Flex Cap bottle is made with professional-grade stainless steel and a wider opening for faster fill. Hydro Flask has elevated the silhouette and simplified design without compromising one degree of performance. And their Color Last powder coat is dishwasher safe for even more convenience. Cold stays ice cold for 24 hours, and hot stays wickedly hot for 12 hours.