VariQuick System: Adjustment of the shoulder strap height using a Velcro adjustment strap and 9 loops on the back panel Position adjustment strap: continuously adjustable and individual adjustment of the inclination as well as load distribution on the shoulders Pull Forward System: Hip fins can be adjusted precisely to your needs by connecting them to the body of the backpack Lite Air Contact Back: Back panel lies close to the body and offers maximum ventilation with an ultra-light weight Side footrests with 2-fold height option thanks to buckle device on the frame and continuous height adjustment via drawstring The width of the footrest can also be adjusted using a drawstring (so even small children's feet don't slip out). Bottom compartment with waterproof inner coating, mesh side areas