The Flight 18 Backpack's design from Peregrine was fueled by quick mountain ascents in the Tetons – early headlamp starts, thin air, gearing up, gearing down, quickly scarfed trail snacks, and precarious traverses – a bag made for it all. The Flight 18 ’s PU coated 140 D Nylon ripstop offers durability with minimal weight. Access the bag quickly on the fly via the cinch top closure with a pull tab cord lock. Stuff your layers into the back pocket then use its unique strap system to minimize bag flop. An external loop allows you to store your ice axe or trekking pole. Keep your innards in order with a reservoir sleeve and an internal mesh pocket. Light enough to store inside another bag for summit bids and durable enough to act alone as a daypack, the Flight 18 is a truly versatile pack.