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
- 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