From road trips to endless hours at the beach, the Hydro Flask 40oz Wide Mouth - Flex Cap bottle keeps you well-hydrated from sun up to sun down. 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— just like always.