Built to go wherever the day takes you, Hydro Flask's 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