40 oz Lightweight Wide Mouth Colour:Tourmaline Full coverage fly with ‘stargazer’

Full coverage fly with ‘stargazer’ roll-back option for plenty of ventilation and night sky views

they’re made from premium grade stainless steel

Sustainability Through Longevity - Grayl® purifier bottles are accompanied by a ten (10) year warranty covering workmanship and materials

running from the Missouri River to the Pacific Ocean

Fully water and dust proof with an IP65 rating

40 oz Lightweight Wide Mouth Colour:Tourmaline Full coverage fly with ‘stargazer’Light but mighty flask to keep drinks cool on the trail Generously sized for your longer pursuits, the 40 oz Lightweight Trail Series bottle is 25% lighter than Hydro Flask's other 40 oz bottles thanks to an innovative stainless steel design. Engineered to deliver the same cold refreshment you expect from Hydro Flask but without the weight, the Trail Series makes it easy to take your cold hydration as far as your spirit of adventure takes you.