Extremely lightweight, made with polycarbonate and it allows the shell to absorb impact by flexing when under heavy stress. Four corner wheels for smooth-glide and easy maneuverability in tight spaces. Recessed locking dual handle with push button. Top grip handle. Fully lined dual space packing systems for easy access packing and convenience. Elastic web straps with easy buckle to keep items in place. Additional zippered mesh pockets and top-banded pockets for under garments and small goods. TSA combination lock on main opening on side. Designed to fit under the airplane seat or overhead compartment.