Waterproof Absorbent Fitted Sheet To Protect Your Mattress From Leaks These Essential By Invizi fitted sheets have been custom developed by us to protect your mattress from leaks as well as absorb moisture away from your body to keep you dry. The top section matches the dimensions of your mattress covering it edge-to-edge with a soft absorbent material with a waterproof backing, while the attached cotton skirt fastens to the mattress to hold it securely in place. Three Layer System: The top layer is a soft quilted material made from a polyester cotton woven fabric. The second layer is a highly absorbent layer with 200gsm polyester filling. The third layer is a woven polyester fabric coated with a waterproof TPU film to prevent moisture from leaking through to the mattress. The TPU is a rubber-like plastic coating that provides a quiet, crinkle-free experience. Bed Sizing: Our range is available in mattress sizes of: Single: 91x193cm with 38cm skirt King Single: 107x203cm with 38cm skirt Double: 137x193cm with 38cm skirt King: 153x203cm with 38cm skirt Super King: 183x203cm with 38cm skirt Features and Benefits: Machine washable up to 300 times, can be tumble dried at low heat (below 30℃) Highly absorbent upper to keep you dry - absorbs between 1.6L (single) and 2.6L (super king) of liquid Crinkle-free soft durable material OEKO-TEX Standard 100 Certified to be free of more than 100 substances known to be harmful to human health Latex free Packaging: Packed in a reusable PVC bag. Safety: Mattress protectors are not recommended for use with electric blankets, they are not flame retardant