Each has a spacious compartment for larger supplies and equipment and a front pocket with gusset for organized storage of instruments and smaller supplies. Two adjustable dividers allow complete customization of the interior. The large, full-access lid has clear vinyl pockets and a full-length zippered pocket. Adjustable buckle assembly keeps the lid upright for visibility. Crafted of rugged, water-resistant ballistic nylon for durability with thick foam padding for shape and structure.MedPac 2800Has large, zippered compartments on the back and both sides. Durable, molded runners protect the bottom of the bag.19"L x 10-1/2"H x 13"DMedPac 1800Has a large, zippered compartment on the back. Rubber foot pads protect the bottom of the bag.15"L x 10-1/2"H x 13"D