The Hultafors Tool Backpack is designed for comfort and durability. It has 48 pockets and tool holders, including a metal clip for measuring tapes and a large outer pocket with a strap for securing cables. There are also two main zippered compartments with additional padded compartment for laptops/tablets. Made from extremely durable ballistic polyester, 1680 Denier. Ergonomically designed 3D-shaped padded shoulder straps ensure maximum comfort. Protective base pads help to protect the contents. Designed and tested to withstand the most extreme conditions including temperatures of up to -20C.