Large backpack with double compartment, one main and one front. Small top compartment for mobile or glasses. Capacity 20 L. Side pockets for bottles. Organizer pocket inside the front part. Water repellent. Padded back with adjustable straps. Reinforced base to prevent wear when in contact with the ground. Possibility of adapting a trolley. Main compartment with double zipper closure, possibility of locking with a padlock thanks to the hole attached to the zipper. Compartment for carrying the PC or Tablet. Made with the best materials that provide resistance and lightness to the backpack.