Stay hydrated with ease using the Hydro Flask 21oz Standard Flex Straw Cap bottle. Built with TempShield® double-wall vacuum insulation, it keeps drinks cold for up to 24 hours or hot for 12. The leakproof Flex Straw Cap makes sipping effortless, while the 18/8 pro-grade stainless steel ensures durability, pure taste, and no flavor transfer. Featuring a Color Last™ powder coat finish, this BPA-free bottle is dishwasher safe, sweat-free, and designed to fit most cupholders—your go-to companion for work, workouts, and adventures.

• 21oz insulated water bottle with Flex Straw Cap
• TempShield® double-wall insulation keeps drinks cold 24h, hot 12h
• Leakproof straw cap when closed
• Made with durable 18/8 pro-grade stainless steel
• No flavor transfer, pure taste
• Fits most standard cupholders
• Color Last™ powder coat is sweat-free and long-lasting
• BPA-free and dishwasher safe
• Flex Straw Cap not for hot liquids