... , L, XL 3) Material: nylon, neoprene 4) Color: black.. elbow support brace 1.Material: neoprene nylon2.Size: S, M, L, XL 3 ... comfortable pressure and maximum body heat retention around the wrist elbow support brace Materialneoprene,nylonSizeS, M, L, XL Colorblack,any other colors ... Control Department specially responsible for quality checking in each process elbow support brace