Gossamer Gear G4-20 Ultralight 42 Backpack - Titanium GreyAn update on Gossamer's much loved G4 backpack, the G4 20 is an ultralight frameless pack for those travelling light. Hard wearing high tenacity Robic nylon keeps the weight down without sacrificing durability, while that removable back pad means it's particularly comfortable. With a 42L capacity, there's enough room for a weekend's supplies, with those big side pockets giving quick access to your bottles and snacks. That big and stretchy mesh front