Hydro Flask 40 Ounce Lightweight Wide Flex Cap
Hydro Flask 40 Ounce Lightweight Wide Flex Cap, LW40LW Hydro Flask 40 Ounce Wide Mouth Lightweight w Flex Cap Less weight. More miles. Durable, yet 20% lighter than the other 40 oz. bottles, this lightweight stainless steel insulated water bottle is made for hiking and backpacking. The wide opening lets you add ice, and the large 40 oz. volume holds hours of hydration.