HARD SHELL SUITCASES : 20 inch 22 x 14 x 9 airline approved aluminum carry-on luggage,combined with luxury aluminum frame and 100% 3-layer Germany Bayer PC material. 4 ALUMINUM CORNER PROTECTION : Provide further protection and increase the usage time of the suitcase. POLYCARBONATE LUGGAGE WITH SPINNER WHEELS : High-strength TPE to reduce friction and noise. INNOVATIVE DESIGN：Multifunctional luggage with cup holder and USB port，also an ingenious hook design. ZIPPERLESS LUGGAGE WITH TSA LOCK : No zip design brings greater convenience.The double YiF TSA customs lock Is strong and reliable. DOUBLE-SIDED ISOLATION SPACE ：High capacity With PVC waterproof pocket ,keeps items fixed and protect personal privacy if you need to open the suitcase in halfway. 20 inch carry on luggage and 24 inch hard shell suitcases with three layer BAYER Polycarbonate material