hydro flask water bottle - stainless steel & vacuum insulated - wide mouth 2.0 with leak proof flex cap - 40 oz, sunflower hydro flask a new look for the new decade. redesigned wide mouth hydro flasks feature sleek stainless steel collars, to match the look of the standard mouth necks. don't be afraid to send your water bottle through the dishwasher, new hydro flask bottles are now dishwasher safe with the new powder coating. take this insulated water bottle with you to the gym, the office, or in your camping gear, it'll keep cold liquids chilled for up to 24 hours and hot liquids hot for up to 12 hours. it's large enough to hold water for the day, yet it fits easily into a backpack or side pocket. this metal water bottle is made with 18/8 stainless steel to keep your favorite drinks from leaving any leftover flavors or odors. wherever you take this stainless steel water bottle, count on hydro flask's flex lid to keep your contents safe from spills and leakage. the flex lid has a water bottle handle on it, so you can carry it easily with one hand. count on hydro flask for hydration on any adventure. this leak-proof water bottle is backed by a manufacturer's lifetime warranty.