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