Capacity: 35 litres (22 litre main compartment capacity, the remaining capacity includes pockets). Material: 420D nylon. Two main compartments with additional compartments allow you to conveniently organize your equipment for short trips and daily hikes The ADS (Alpinus Dry System) support system with spacer mesh and aluminium frame ensures four-way air circulation and effective back ventilation Adjustable shoulder straps, chest strap and wide waist belt with pockets allow for a custom fit and stable load transfer Durable 420D abrasion and tear resistant nylon material works in harsh terrain conditions The integrated rain cover, Alpinus safety reflectors and the attachment of trekking equipment increase functionality and safety