Hydro Flask 1601-91 Hydro Flask Standard Mouth 21 oz Bottle with Flex Cap

Hydro Flask 1601-91 Hydro Flask Standard Mouth 21 oz Bottle with Flex Cap 

The Hydro Flask 1601-91 Standard Mouth 21 oz Bottle with Flex Cap is the perfect travel companion for everyday adventures. Designed to fit easily into small shoulder bags, backpack side pockets, and most car cup holders, it delivers reliable hydration without weighing you down.

Featuring TempShield™ double-wall vacuum insulation, it keeps beverages cold for up to 24 hours and hot for up to 12 hours while eliminating condensation. The leakproof Flex Cap ensures secure transport, making it ideal for commuting, hiking, travel, or daily use. BPA-free and built with Hydro Flask’s trusted durability. Hand wash only.

• 21 oz capacity – perfect for daily hydration

• TempShield™ insulation keeps drinks cold up to 24 hours and hot up to 12 hours

• Standard mouth opening for easy drinking and filling

• Leakproof Flex Cap for secure, worry-free transport

• Eliminates condensation to keep hands and bags dry

View All Hydro Flask Brand