The Ecosleep Waterproof Sheets provide ideal protection for any mattress (including memory foam). Its unique stretch fabric moves with your body and mattress to ensure a comfortable night's sleep. The thin layer of polyurethane protects your mattress from bacteria and moisture and creates a barrier between you and any dust mites in your matttress. For permanent protection we recommend a full dust mite barrier case and pillow case, but for temporary use such as a night away or a holiday, these are ideal. The pillow case protects from dribbles and sweating and can be used with or without a top pillow case.
The material in these fitted sheets is impermeable to dust mites though because they do not completely encase the mattress they do not create a complete barrier. Dust mites cannot pass through the material to get to you and moisture and skin particles cannot get through for dust mites to feed on.
The upper surface is made from Tencel, a new natural fibre which is as cool as linen, soft as silk and more absorbent than cotton. The backing is a thin layer of waterproof polyurethane.