Essential Mattress Protector. Healthy, anti-protector for you and your mattress.Waterproof HPU membrane, Hypoallergenic & anti dust mite, Moisture control, Machine washable, 10 year warranty, 2 in 1 fitted sheet style, Adjustable skirt, Breathable.Composition: 100% polyester jersey. PU film, waterproof and breathable. Adjustable skirt: 100% polyester jersey. suitable for mattresses up to 32cm deep.