This waterproof mattress protector also has allergy protection. Fitted skirt Smooth microfibre sleep surface Waterproof Miracle Membrane Allergen barrier. Protector is lightweight, stretchy and undetectable. Air vapour porous .Test washed 200 times. Benefits of Basic: keeps Human body fluids out. Prevents growth of bacteria in the mattress. Keeps dead skin cells out. No stains on the sleep surface. Easy care. Wash hot. Tumble dry. Prolongs the life of the mattress. Single. 90(W) x 190(L) x 27(D)cm