The 28? and 24.5? Packing Cases include a removable Suiter Consisting of interlocking protective foam panels, this luggage creates a 360?? shock proof shield to protect your belongings. Freefoam? luggage cushions and absorbs impacts from any direction Combining Freefoam? and Frameless? technologies results in an incredibly lightweight product with superb strength No internal frames to restrict packing Expansion section adds up to 25% additional capacity when needed Corner mounted stainless steel ball bearing wheels for stability Stylish curved internal aluminum handle system with push button lock top handle Full lined interior with packing divider and organizer pockets #10 interlocking zip pullers on main compartment