Hydro Flask 21 oz Lightweight Standard Mouth Trail Series


Products can only be shipped to U.S. addresses.


Ridiculously light, and durable enough for any trail, Hydro Flask’s 21 ounce Standard Mouth Lightweight Trail Series™ bottle is 25% lighter than their other 21 ounce bottles and provides the best cold hydration experience for your longest adventures. The narrow Standard Mouth opening is ideal for quick sips on the trail, and the slim bottle profile stashes easily into a pack pocket. Engineered to deliver lasting cold refreshment with TempShield™ insulation in an innovative lightweight stainless steel design.

Ideal for lightweight hydration to keep you going further
Fits most backcountry hydration filters
Durable 18/8 Pro-Grade Stainless Steel construction
TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
Flexible perforated strap and aluminum pivots for added weight loss
BPA-Free and Phthalate-Free

Size & Dimensions
Volume: 621 mL
Diameter: 2.8″
Height: 10.2″
Weight: 9.6 oz

Lightweight Flex Cap
Honeycomb™ insulated wide mouth cap with a flexible perforated strap and aluminum pivots cut weight in their leakproof design.

Stainless Steel Construction
18/8 pro-grade stainless steel walls are thinner to reduce weight while maintaining durability.

25% lighter than their other 21 ounce standard mouth bottles means this lightweight stainless steel bottle weighs less so you can do more.

Additional information

Weight 1.0000 lbs
Dimensions 0.0000 × 0.0000 × 0.0000 cm



21 OZ