Our Permafresh water and stain resistant mattress pad offers long-lasting anti bacterial protection that will give 100% protection against hundreds of common bacteria, bed bugs, dust mites and insects. Permafresh uses polypropelene for the cover making it eco-friendly. 100% anti dust mite Anti bed bug Anti mosquito, ticks and fleas Permanent antibacterial protection 100% polypropelene Fits mattress pad up to 21 Features: Stain Resistant Bed Size: King Country of Origin: Imported