21 Oz Standard Flex Straw Cap | Hydro Flask spring/summer corrosion-free composite construction

corrosion-free composite construction

Our unique cold-retaining technology puts thicker insulation in the base where cold is most susceptible to loss

Machine Wash and Dryable - Throw 'em in the laundry with your pants

constructed of 1000d Cordura nylon

Due to the manufacturing process

21 Oz Standard Flex Straw Cap | Hydro Flask spring/summer corrosion-free composite constructionFlex Straw Cap makes cold refreshment that much easier Flex Straw Cap is leakproof when closed, to transport without worry Flex Strap is easy to transport and comfortable to carry Honeycomb Insulated Cap Insulated Cap for maximum temperature retention Made with 18 8 pro grade stainless steel to ensure durability, pure taste and no flavor transfer TempShield double wall vacuum insulation keeps beverages cold up to 24 hours and hot up to 12 hours Color