BD Black Diamond Speed 50 mountaineering backpack is ideal for climbing and mountaineering excursions even on ice. Spacious and ultra-light, it is equipped with a backrest with a thermoformed panel, a strap to fix crampons, a detachable and adjustable hood, a removable padded belt, a removable sheet that also acts as a bivouac pad. Equipped with Pick Pocket, pockets for ice tools, it is also compatible with hydration bags. The structure with which it is made favors the correct balance of the body, prolonged comfort and the freedom to move naturally without feeling forced. For this reason, it is essential to choose the size that takes into account, for the backrest, the size that starts from the base of the neck to the narrowest point of the waist and waist circumference. Size Volume Weight S / M 48 l 1180 g M / L 50 l 1260 g BD Black Diamond Speed 50 climbing and mountaineering backpack