A multifunctional professional thanks to individually adjustable compression straps for flexible attachment of equipment. Additionally, the backpack made from bluesign-certified main material offers extra storage space in the removable hip fin pockets. A water bottle fits in the fold-out pocket. The respective volume sizes of the Aircontact X can be optimized to the individual size of the wearer through the adjustable back length of the VariSlide system, the perfectly fitting VariFlex hip fins, and the movable ActiveFit shoulder straps, making it comfortable to wear thanks to the large-area Air Spacer Mesh.