This product mainly by the PVC cloth, the thermal bonding closely after another, and inflatable mouth, cloth, inflatable ball, rubber, plastic joint combination becomes. Technical parameters: medical cushions cloth fabric should look neat and a reasonable speeches, no obvious ruffle and float lines, stitch evenly, does not allow to have the leak, needle jumping or to take off the line. The surface should be smooth, clean air, thermal bonding rigor, thermal bonding straight line, gas mouth thermal bonding firm.. Every medical cushions can withstand the weight of 125 Kg, 4 h may not have broken or leakage phenomenon.