Built to go wherever the day takes you, our 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