This reusable underpad is an economic option to help you protect your mattress from damaging moisture. This overlay features a vinyl knit barrier to better withstand multiple washing and drying cycles while staying soft and leak-proof. Also, this underpad features a comfortable twill facing that helps it resist staining – keeping it looking fresh for a long time. This underpad is available in 3 different sizes: small (18" x 24"), medium (24" x 36"), or large (34" x 36"). One side of this overlay is white, and the other side is white.