Ideal for check-in or road trip travel, with a protective polycarbonate shell and expandable zipper. Quadro Spherical wheel Custom spherical wheel design for maximum mobility, durability and minimum rolling resistance. Durable Polycarbonate Shell Premium polycarbonate shell with matte-finish, scratch-resistant texture to protect valuable contents. Combination Lock TSA approved zipper combination lock molded into the shell to keep your gear secure. Take along more in the Quadro 28" molded polycarbonate shell roller. The integrated TSA approved zipper lock and Fuziona;"A zippers by YKKAA(R) provide security and reliability, and the unique Quadro spherical wheels provide the ultimate in four-wheel mobility. Proprietary Quadro spherical 4-wheel system provides smooth multi-directional rolling Premium polycarbonate shell with matte-finish, scratch-resistant texture to protect valuable contents TSA approved zipper combination lock Multi-stage trolley handle Fuziona;"A zippers by YKKAA(R) with woven-in teeth provide 5X the abrasion resistance over the traditional sewn-in teeth in a low-profile design Internal mesh zippered pockets and zippered panel closure Elastic compression straps with secure buckle closure Molded grab handles on top and sides for easy handling Zippered expansion panel adds 1.5" of depth Item # 1393142426 Ideal Fit For Anyone Activity Adventure Travel Product Dimensions 28in H x 18in L x 10.5in W Weight 10.1lbs Main Body Access Panel Compartment Access Closure Type Zipper Closure Warranty Limited Lifetime External Material 100% Polycarbonate Pack Body High-Impact Polycarbonate Lining 40% Post-Consumer Recycled 135D Polyester Suspension Polycarbonate and HDPE