This lightweight trekking backpack for ambitious long-distance undertakings features our VariQuick back length adjustment and ECL hip fins for a snug, comfortable fit and highly efficient load transfer. The Aircontact Lite full-contact back system made of open cell foam with a ventilation channel generates noticeably effective breathability and allows space to ease the strain on the spine. The result: superb balance between comfort and light weight for long days on the trail.