Deuter Aircontact Ultra 40+5

"The Aircontact Ultra 40+5 from Deuter is the ideal companion for anyone looking for adventure in the great outdoors, be it climbing, bouldering, hiking, mountaineering or speed hiking. This versatile backpack is also ideal for longer trekking tours, traveling and even running. With a volume of 40 liters, which can be expanded by a further 5 liters, it offers enough space for everything you need on the go."
"Thanks to the innovative Aircontactsystem and the Air Spacer Mesh, your back is always well ventilated, even during sweaty activitiesu00e4ten. The round profile frame made of permanently elastic spring steel ensures stability, while the Clip & Loop-riu00fcckenlu00e4nge adjustment allows for individual adjustment. The ergonomically shaped Active Fit shoulder straps with SoftEdge closures and the padded hip fins offer additional comfort and optimum load distribution."
"Practical details such as the removable, height-adjustable backpack lid, the hydration system compartment for hydration bladders up to 3 liters and the SOS label with emergency numbers make this backpack a reliable partner in the wilderness. The signal whistle and modular fastening straps offer additional safety and flexibility, while the mesh sides and front pocket as well as the adjustable helmet net keep things tidy."
"The robust ripstop material made from high-performance fibers withstands even the toughest conditions and makes the Aircontact Ultra 40+5 the perfect choice for demanding outdoor adventures."