Zippered Crib Mattress Protector - Waterproof Crib Mattress Encasement, Fit great: This crib mattress protector measures 28 inches x 52 inches x 5 inches. Fits all standard crib mattress. waterproof and breathable: Not only the top surface is waterproof like other zippered encasement, the 4 sides of this zipped crib mattress cover are waterproof, which can keep pee or any other liquid from leaking into your mattress through the sides. In addition, the bottom fabric is non waterproof but breathable , which allows greater airflow goes through the crib mattress. High-quality zipper: To avoid the zipper getting stick or dislodged when changing the mattress cover, we use the best zipper on this mattress protector. Also, the quality of stitches you can trust which will not popped and ripped for a long time. Super soft: This crib mattress protector is filled with soft padding which will gives your little one an extra comfort sleeping night. Biloban's Life-time Guarantee: Biloban's quality you can trust. if Biloban?s products does not meet your needs for any reason, contact us but not amazon at first time, Replacement or Money Back, No Questions Asked!