Are you looking for a robust and comfortable multi-day trekking backpack? Then the Aircontact Ultra 40+5 is a great choice for you. The main material is made of ripstop nylon, which is particularly tear-resistant. Deuter places great importance on environmentally friendly and resource-saving production. Thus, the Aircontact Ultra 40+5 meets the requirements of the Green Button and bluesign products. Both the ergonomically shaped and padded hip belts and shoulder straps, as well as the removable chest strap, are individually adjustable, ensuring that the weight of the backpack is well distributed. With Deuter's Aircontact back system featuring Air Spacer Mesh, your back will be well ventilated even during sweaty passages. This makes even heavy loads feel light. The Aircontact Ultra 40+5 is compatible with hydration systems of up to 3 liters, so you don't have to take off your backpack to drink. With its slim shape and minimalist appearance, the Aircontact Ultra 40+5 also performs well in more challenging terrain.