For spontaneous mountain biking trips, the Trailvent 15-liter bike backpack is the ideal companion. It impresses not only with its excellently ventilated Aeroflex 3D back system but also with long-lasting comfort, ensured by the infinitely adjustable back length, well-padded hip and shoulder straps, and the chest strap with a hose holder. The thoughtful compartment layout leaves nothing to be desired: the large main compartment includes a separate pocket for a hydration bladder, a zippered pocket for valuables, and a key holder. The spacious front pocket accommodates a pump, tools, and a spare tube. The side compression straps in the upper third ensure that the contents of the backpack are stored securely; the mesh outer pockets hold everything that needs to be quickly accessible. A helmet holder and a light holder are also part of the equipment, along with large reflective elements and an integrated rain cover. The bike backpack is equipped with Eco Finish, making it water-repellent and free from PFCs. The VAUDE Green Shape label stands for an environmentally friendly, functional product made from sustainable materials.