Soft rayon from the bamboo waterproof pad with four layers of protection: Rayon from bamboo Terry, 100 GSM polyester, non-woven fabric with 2 mm PU coated, and 60 GSM knitted fabric. These mattress pads absorb and protect against incontinence and bedwetting stains, fluid, and liquid spills. It also shields your mattress from unwanted moisture, dust mite, and bacteria and is breathable and noiseless.