1Pc Zippered Crib Vinyl Mattress Cover Waterproof Standard 28" x 52" Size Baby Toddler Bed Protector This zippered mattress cover fits on standard crib sizes 28" x 52", and is the best permanent solution to stains and perfect waterproof layer protects mattress from any unpleasant odors. Help prevent bed bugs, dust mites, with this fitted mattress cover which also offers protection from liquids. The hassle free zippered design allows for easy installation and removal, covers in cases entire mattress, long wearing boilable vinyl. Easy to maintain, simply hand wash with mild soap and warm water or wipe clean with a damp cloth.