Rear growth system, adjustable up to a height of 100-150 cm. An eco-friendly product made from 100% recycled PET bottles, the plastic buckles are free of phthalates and other harmful materials. This concept allows, thanks to the internal compression cord, to tie the entire load, pressing against the back, thus eliminating the leverage acting on the back. Contains 2 Kletties - interchangeable Velcro images, new designs can be purchased and the backpack can be decorated individually. You can also purchase optional accessories, plastic plates, a case with 20-piece padding or a sports bag (can be attached to the backpack in 3 places), a wallet with the same design as the backpack.