Active Air FLX with the award-winning ‘AIR FLOW’ air cushion from Beckmann! The innovative back support system is based on a combination of air and foam padding. The advantage of air is that the support will be dynamic and constantly adapt to your movement. This will in turn always fill the cavities between your back and backpack which leads to even better support and stability. FLX – because not all days are the same! With the FLX system, the volume of the backpack can be expanded by approx. 5 liters if required. The backpack comes with an integrated rain cover in the side pocket, a separate waterproof frontpocket for lunch box and drinking bottle and many different buttons that can be attached to several places on the backpack.