With hidden compartments on the back and in the shoulder strap for your cards (RFID protection). The backpack features a side pocket for a water bottle and a removable elastic net for your sports equipment. Inside, there are padded compartments for a 15.6" laptop and a tablet up to 12.9", as well as additional storage pockets for other belongings. Simply roll up the opening and secure the main compartment with the steel-reinforced combination lock. This also gives you the option to attach the backpack somewhere.