This spacious hiking backpack is ideal for expeditions or longer tours. The new ergonomic Aircomfort Sensic Pro mesh back system ensures maximum back ventilation and a pleasantly flexible fit. In addition, the flexible Variflex ECL hip fins facilitate the energy-saving and comfortable transport of medium loads. The ergonomic cushioning inserts hold these firmly to ensure the perfect, custom-fit load distribution over the hips. PFC free High-performance materials with PFC-free dirt- and water-repellent impregination: To ensure the water and dirt repellent properties, we use a Durable Water Repellency (DWR) coating that is safe for health and environmentally friendly and completely PFC-free. This special surface treatment causes water to roll off the outside of the textiles. This keeps the material dry and nature clean.