antWalking Outdoor 40L Tactical Rucksack With Laptop Compartments Backpack Five primary storage compartments including a main storage compartment of 700 cubic inches or 12 liters in volume A dedicated 15x10 compartment with laptop sleeve suitable for tablets or laptops up to 13 inches in size Crafted from heavy duty, water resistant nylon, resistant to tears and abrasion Velcro strips for attaching customized patches and PALS webbed lining for attaching MOLLE pouches and accessories Dimension: 453118cm/ 17.7"12.2"7.1"