Genuine "GI" Mechanics Tool Bag made of water-resistant, military-grade 18oz black canvas, and it's designed to last a lifetime. It features rounded corners, a hard bottom insert, and a reinforced top with a full-length solid brass zipper. There are two (2) sets of internal pockets to keep small, or sharp edged items from flying about in the bag. It also has two (2) an external pockets with a full-length snap-down flap to provide easy access to frequently used tools. Dimensions are 17.5"L x 6.5"W x 9.5"H overall size which provides ample storage space for all your essential field tools. Great for toting around socket sets, hammers, wrenches, rivet guns, bucking bars, and any other hand tools.