This 40 oz wide mouth bottle is one of Hydro Flask's largest insulated bottles. Made with the new award-winning Flex Cap with it's combination of strength and flexibility. Large insulated water bottle for longer adventures Fits most backcountry hydration filters Temp Shield TM Protected for max insulation Keeps cold up to 24 hours Keeps hot up to 6 hours 18/8 Pro Grade Stainless Steel BPA-Free and Phthalate-Free Durable, sweat-free powder coat finish Compatible with Hydro Flip Lid and Wide Straw Lid Colors Available (While Supplies Last): Stone Grey, Black, White, Olive Green, Rain Blue, Seagrass Green, Laguna Blue, Snapper Pink, Starfish Yellow, Pacific Blue Hydro Flask 40 Oz Wide Mouth Bottle In White | Eagle Eye Outfitters