Built to go wherever the day takes you, the 40 oz Lightweight Wide Mouth Trail Series™ bottle provides a substantial amount of hydration. Thanks to an innovative stainless steel design it’s engineered to deliver the same cold refreshment you expect from Hydro Flask, but is 20% lighter than our other 40 oz bottles.

• Lightweight hydration to keep you going
• 20 percent lighter than other Hydro Flask 40 oz Wide Mouth bottles
• 24 hours cold, 12 hours hot
• TempShield®️ double-wall vacuum insulation
• Leakproof when closed
• Pure taste, no flavor transfer
• Durable stainless steel
• Flexible perforated strap and aluminum pivots to minimize weight
• Bottle fits most backcountry water filters
• BPA-Free