Gossamer Gear G4-20 Ultralight 42 Backpack Size:Small The Thermo Grid fabric used

The Thermo Grid fabric used on the Protium Beanie provides effective temperature regulation and the brushed back feels warm next to skin

Outer layer: Polyester air mesh (bluesign® approved)

"I grew up wearing one of these I remember what its like to be a child again" D Faber

The formula is PFAS-free and can be used on technical fabrics

Gossamer Gear G4-20 Ultralight 42 Backpack Size:Small The Thermo Grid fabric usedWe took what made the original G4 so popular and roped in a gang of new fabrics and materials to create a frameless, do it all companion for thru hikers and weekend warriors. Overview We took what made the original G4 so popular and roped in a gang of new fabrics and materials to create a frameless, do it all companion for thru hikers and weekend warriors. The G4 20 is made for ease on trail. Each buckle, zipper, and cord has been scrutinized for