The Heavy Duty Tool Hauler Backpack from Wiha Tools has 77 storage and 30 flexible attachment options for individual needs, with separate compartments that allow users to securely store their laptop, cell phone, and documents away from their tools. The backpack features a tilt-resistant, waterproof hard wearing-base tray to keep tools dry, as well as a stable foothold which makes sure that the backpack has a firm stand even when opened. The bag can be opened without the need for being pulled out of the trunk. The backpack is 15.16" by 10.24" by 20.87" and weighs 8.3 lbs.