The waterproof backpack with roll closure is made from tear & abrasion resistant nylon fabric; it is compact & ergonomic. Two daisy chains on the waterproof front pocket plus outer pockets (not waterproof) on the sides for water bottles etc. & trekking pole attachments turn it into a transport talent. A lightweight carrying system with adjustable distance mesh allows air circulation. The backpack is comfortable to carry with adjustable chest waist & shoulder straps. Size 27 L Height 53cm Width 28cm Depth 21cm Weight 1520g Waterproof outdoor rucksack in two sizes with roll closure+ Tear & abrasion resistant nylon fabric+ Breathable individually adjustable carrying system with waist & chest straps+ Waterproof front pocket with roll closure+ Two Daisychains on front pocket for fixing+ Lateral neoprene pockets on both sides e.g. for drinking bottles (not waterproof)+ Loops for trekking poles+ Handle+ Integrated hydration system (optional accessory) with hermetical opening for drinking tube (up to a diameter of 10.5 mm) + Internal organizer size A4+ Internal zipper pocket for valuables Contents: Backpack comes with carrying system Note: In order to meet standard IP64 (6=dustproof 4=protected against splash water coming from all directions) the roll closure must be rolled at least 3-4 times.