They're pretty much the perfect pair — the Hydro Flask 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. It stashes easily in a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough to keep you going for hours without weighing you down.
- Versatile, middle-of-the-road size, equipped with an insulated Sport Cap
- Note: Sport Cap is not intended for use with hot liquids and is not leakproof
- TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- BPA-Free and Phthalate-Free
- Compatible with Standard Mouth Flex Cap
- Size & Dimensions
- Volume: 21 oz / 621 mL
- Mouth Diameter: 1.91"
- Diameter: 2.81"
- Height: 10.4"
- Weight: 11.3 oz
- Lifetime Warranty