For high wearing comfort and optimal load distribution, the Aircontact back system with Air Spacer Mesh and a large ventilation channel, the comfortable shoulder straps, the movable hip fins, and the ergonomic lumbar pad are all designed to enhance your experience. A large, J-shaped front opening provides effortless and quick access to the contents of the backpack. Additionally, the removable 3-liter hip fin pockets offer extra volume for personal items. There is also space for drinking bottles up to 1.5 liters in a fold-out pocket.