This comfortable pack is very versatile thanks to modular gear straps that can be positioned to attach a range of items depending on the undertaking or the gear you need. Its superior carry comfort is down to the deuter Aircontact back system with Air Spacer mesh and a wide ventilation channel, plus ergonomic shoulder straps and an adjustable sternum strap. The Y-shaped frame in combination with mobile hip fins that wrap around the hips and deuter's ergonomic trapezoid-shaped lumbar pad work together to distribute and stabilize the load. deuter - Aircontact Core 40l +10 Trekking Backpack graphite shale