Backpack with capacity of 32 liters extendable to 45 according to needs. The Arc'Teryx Brand bets for an ultra-light and waterproof backpack. Specially created for the climbing and alpinism use, as in ice as in rock.
The Alpha FL 4
N400r-AC² Nylon 6 Ripstop
High Mountaineering & Expeditions, Traditional Climbing, Ice-fall Climbing