25-30 liters capacity. I looked at DeWalt and other few tool bags (duffel type bags, not backpacks), and liked the super-strength, but didn't like the open external pockets. Covered external pockets are prefered. I will not be using it as a strictly tool bag, but more as a multi-purpose utility bag in hard work environment. A budget friendly non-tactical bag is preferred. A tool bag with closeable outer pockets will be great.