Polycarbonate shell, Expands two inches for more packing capacity, Built-in TSA lock, Eight spinner wheels system, push-button telescopic handle, padded top and side grip handles Fully lined interior features a flap divider, accessory pockets, and tide down webbing straps 20" Carry-On Dimensions: 20" H x 13" L x 9" W - 6.5 lb 24" Upright Dimensions: 24" H x 15.5" L x 10" W - 7.6 lb 28" Upright Dimensions: 28" H x 18" L x 12" W - 8.8 lb