A fan favorite. Big enough for a whole day on the river or trails, the Hydro Flask® Wide Mouth With Flex Cap 32oz is made with professional-grade stainless steel, powder coating and a wider opening for faster fill. Cold stays ice cold for 24 hours, and hot stays wickedly hot for 12 — just like always with our TempShield™ insulation. Big enough for a whole day on the river or trails. 32oz. Hand wash only.