Hydro Flask signs deal with U.S. Ski and Snowboard Association Hydro Flask, an award-winning leader in high-performance, insulated stainless steel flasks and soft good innovations and a Helen of Troy Limited (NASDAQ, NM: HELE) company, is excited to announce a multi-year sponsorship with U.S. Ski & Snowboard. The brand has signed on as the official water bottle and drinkware supplier of the U.S. Ski & Snowboard Team.