Durable and versatile single day pack for multi-pitch rock, alpine and ice climbing. Alpha Series: Climbing and alpine focused systems | AR: All Round. Arc'teryx developed its own fabric to achieve the hardwearing durability necessary for alpine and rock climbing. Prioritizing abrasion and tear resistance, a liquid crystal polymer ripstop grid is incorporated in a high tenacity nylon fabric. Extremely versatile, customizable options suits the needs of varied alpine adventures. A removable framesheet and an adjustable, removable top lid give the option to shed weight. Custom webbing daisy chains securely lash gear and ice pick capture accommodates a range of angles