rms ultra soft 4-layer washable and reusable incontinence bed pad - waterproof bed pads, 18"x24" (3 pack) rms royal medical solutions presents rms reusable absorbent waterproof sheet protector which was designed carefully by healthcare professionals. the washable underpad can keep your bed sheets dry all night and protect mattress and sheets from moisture and staining caused by incontinence or medical conditions. offers 4 layers protection -deluxe blended fabric and premium brushed polyester quilted top, soft polyester fiberfill layer, absorbent inner layer, and non-slip latex-free waterproof barrier. our sheet protector is machine washer and dryer friendly. size 24in. x 18in and pack of 3.