3 PIECES SET: Including 20inch, 24 inch, 28 inch, to meet any travel use. You can choose the size you need according to travel days and transportation. ?The suitcases with wheels are lightweight but hardside and durability.The sturdy ergonomic iron telescoping handle and soft side-handle is easy for lifting. ?Spinner Wheels: The hard shell suitcase have four double spinner wheels for 360 Degree effortless mobility in any direction, smooth and quite, solid enough to carry larger weight, and it is detachable and keep super low noise. ?The suitcase locks keep your valuables secure, and convenient to pass security check. ?The efficient interior for packing design allows you to pack more while avoiding excess weight surcharges imposed by most airlines. Specification: 20 INCH Dimensions excluding whees: 20" x 13" x 9" Dimensions including whees: 22" x 13" x 9" Weight: 6.1 LBS Handle Height: 19" Travel Days: 1~4 days 24 INCH Dimensions excluding whees: 24" x 17" x 11" Dimensions including whees:26" x 17" x 11" Weight: 7.9 LBS Handle Height: 16" Travel Days: 4~7 days 28 INCH Dimensions excluding whees:28" x 19" x 12" Dimensions including whees: 30" x 19" x 12" Weight: 9.5 LBS Handle Height: 11" Travel Days: 7~9 days