The heart of the system is the extra-wide, ergonomically shaped 01 neoprene hip belt with Velcro fastening and large heavy-duty buckles, which transfers the main load to the hips, thereby positioning the pack optimally at the body’s centre of gravity. The ergonomically designed shoulder straps keep the backpack comfortably in place.Proximity to the body is important for 02 back protectors, and this has been optimized for maximum possible ventilation by way of air mesh elements, EVA pads with ventilation holes and a large ventilation channel in the centre.