Medium volume rucksack designed for easy descents without large verticals with very short access and exit - intended for professional driving. Main features: medium volume (40 litres); in operating arrangement can hold 1 x 60 m 10 mm rope and a bag or tin can; during transport it can contain 1 complete wet wetsuit and a bag or water can, as well as other objects; the 60 m rope can be carried externally to the backpack, blocking it with the side straps of the zip and emptying net (can be quickly removed thanks to the structure of the bag etc.) Practical side compression straps that allow you to attach to the backpack ropes and other bulky objects at the rapprochement stage, dedicating the internal volume to the wetsuit and other delicate objects. The straps are also used to attach to the backpack of the lirung rope bag, for easy carrying and use of the adjustable shoulder straps, quick release, with integrated Daisy chain adjustable abdominal belt practical and sturdy carrying handles ergonomic internal loops for materials of 2 bright colours internal rings for attaching the cable ends in 2 bright colours.