From road trips to endless hours at the beach, Hydro Flasks 40 oz Wide Mouth bottle keeps you well-hydrated from sun up to sun down. They couldnt think of a bottle more deserving of a refresh, so theyve elevated the silhouette and simplified design without compromising one degree of performance. And the 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.