From alpine crossings to multi-day adventures, the CUBE ATX 30 has masses of packing space and is the biggest backpack in our collection. An optimal fit is courtesy of CUBE's own Natural Fit back system developed in-house and padded hip straps. Weight is distributed comfortably, while good padding and ventilation keep your back feeling fresh. The versatile MOLLE system also makes it easy to securely attach the CUBE GEAR BAG 1 using touch fasteners for some practical extra storage. And side compression straps mean you can squash down the volume on the days where you're carrying less gear. Well-designed compartments, two tool compartments and a side pocket for your smartphone keep the most important items within easy grasp. And with a hydration pack compartment and rain cover thrown in, it genuinely has it all!hydration system compatible MOLLE system zipper pocket in main compartment tool compartment on both sides helmet holder Natural Fit backsystem reflective elements raincover Easy-Access side pocket for smartphone protector holder compression strapsMATERIAL nylon VOLUME 30 litres