This backpack has one main compartment. All pockets inside the backpack for phone, laptop are made of fleece fabric. There are zipped pockets for keys and small items. Outside there are zipped pocket and pocket for bottle. Air mesh back and strong straps. Reflective element. Material of backpack is polyester. Size of the backpack is 32 * 45 * 14.5 cm. Volume is 10 litres. Weight of backpack is 950 gr.