Features Back, shoulder straps, and hip belt with ventilating mesh Compression straps on each side and in front Multiple attachment points Attachment points for ice axe/poles Adjustable sternum strap Description Bergans Backpack: The QSS carrying system has set the standard for the world's most advanced rucksacks for many years! This Alpinist 110L Back pack by Bergans features the 5th generation QSS that is lighter, better, and more comfortable than ever. The QSS carrying system has several constructions that are patent protected. It features lateral stay that stabilize the load and provide freedom of motion for your head and neck, the composite stays prevent the bag from becoming cylindrical when packed, ensuring that the load will be placed and close to the body as possible. This promoted correct posture and prevent imbalance. It also ensures optimum weight transfer from the rucksack to the entire carrying system. Patented adjustment buckle, enables separated adjustment of left and right shoulder strap. Also makes it possible to even out any irregularities in the back. Stabilizing straps on the hip belt improves stability by pulling the pack closer to your body, the weight is transferred by means of shock absorbs that reduce the strain, particularly on the spine and knees, when carrying heavy loads. The shock anatomical frame flexibility which prevents movement in the hips, back and shoulders from being impeded or locked due to the rucksack's construction. They also control/limit the flexibility in the hip belt, which prevents instability in the rucksack at high activity levels. 4592