Hydro Flask - Hydro Flask 21oz Lightweight - Standard Mouth

Ridiculously light, and durable enough for any trail, the Hydro Flask 21 ounce Standard Mouth Lightweight Trail Series bottle is 25% lighter than other Hydro 21 ounce models.

Quantity: 2

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



  • Size: 21 oz
  • Volume: 621 mL
  • Diameter: 2.8"
  • Height: 10.2"
  • Weight: 9.6 oz
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