This flexible bike backpack conquers every Alpine crossing and any challenging trail uphill and downhill with ease. The multi-impact protector from SAS-TEC SCA 500 is integrated into the ergonomic body-contact back system and can be easily adjusted to the body height or back length via the 6 cm height-adjustable hip belt. Lightweight shoulder straps, combined with the breathable, fully enclosing hip belt with a side closure, ensure a secure fit in rough terrain. The large, externally mounted front pocket contains numerous compartments for organizing tools, spare tubes, and a pump. The upper front pocket has a mesh pocket inside for safely storing a wallet and keys. Additional mesh pockets are located on the sides and on the right hip wing. A flexible helmet holder, which can also accommodate full-face helmets, as well as a removable rain cover are included. Both can be stored in the bottom compartment. For significant thirst, the hydration bladder compartment can hold 2 to 3 liters. Other features include an adjustable chest strap with a hydration tube holder, a key holder, a light holder, glasses holder, side compression straps, and reflective elements. The abrasion- and tear-resistant ripstop material has been produced in an environmentally friendly manner according to the strict bluesign® standard and is equipped with Eco Finish, which is PFC-free and water-repellent. The GS mark stands for "Tested Safety" according to CE standard EN 1621-2 by TÜV SÜD. The VAUDE Green Shape label represents an environmentally friendly, functional product made from sustainable and bluesign® certified materials. Additionally, this product is climate-neutral: emissions from materials, manufacturing processes, and shipping have been comprehensively assessed and systematically reduced. Currently unavoidable emissions have been fully compensated through the independent non-profit organization "myclimate.".