Hydro Flask

Hydro Flask has proven itself to be among the very best for all-day hydration with advanced insulation and leak-proof portability. It's constructed from premium 18/8 stainless steel for purity and durability, and exceptionally well manufactured with a vacuum-sealed double-wall design that protects interior temperatures better than anything else. All Hydro Flask containers and lids are BPA-Free and Phthalate-Free, and will hold cold contents at temperature for up to 24 hours, and keep hot contents at temperature for up to 6 hours. Manufacturer's limited lifetime warranty.