motorcycle back protector 1) 4pcs for chest 2) Adjustable with button 3) meets CE standard 4) OEM service available motorcycle protector (for back) --- MB-0011) 4pcs for chest2) Materials --- anti-impact PE, lycra mesh, EVA, high-density sponge, nylon straps3) Adjustable sizes4) ctn:45*44*61cm , 20pcs/ctn5) CE quality standard Back Protector