Ultrasonic waterproof mattress protector

This is a waterproof mattress, there are four layers fabrics ,non-woven fabric 50gsm+bonded fiber 80gsm+non-woven 25gsm+PVC100gsm.The four layer fabric ultrasonic quilting together, the color is white. You can see the surface,it’s not embossed or printed, this design is finished with ultrasonic quilting machine, and the sides are overlocked. At the back side,  four corners stitched with elastic ribbon, these can fix the mattress on the bed and not slide around. The normal packing is PE bag with self seal.