After you purchase this useful Trunk Bag, you'll want another, and another and another. You'll just keep finding uses for it. Wonderfully made of water resistant material to protect your tools. The main pocket holds large tools. Two smaller outside pockets separate your sockets, fasteners, etc., while a large pocket on the other side is great for screwdrivers, ratchets or whatever. Inside of large compartment measures 16" long x 5" wide x 5" high. Excellent for "trunk" tool kits, or as a house "fix-it" bag. My boys keep their Game Boys® and other cool loot in one when transporting things from the house to the cars.