The Hydro Flask 40 oz Wide Mouth Water Bottle will keep you hydrated during road trips, endless hours at the beach, from sunup to sundown. Hydro Flask has elevated the silhouette and simplified design without compromising one degree of performance in this water bottle. This water bottle features a Color Last powder coat that is dishwasher safe for even more convenience. Cold stays ice cold for 24 hours, and hot stays wickedly hot for 12, just like always, thanks to a unique double wall vacuum insulation that protects temperature for hours. This bottle is made of 18/8 pro-grade stainless steel to ensure pure taste and no flavor transfer, and the durable construction stands up for whatever life brings.