Egyptian Cotton bedlinen is renowned for its superior quality. The 200 thread count cotton percale bedding is both cool in summer and warm in winter making it an ideal choice all year round. Woven with lengthy staple fibres the fabric feels soft and smooth. This Egyptian cotton bed linen comes with an easy care finish, so the need for ironing is minimal and will help you look after your Egyptian Cotton bed Linen for years to come. The 200 thread count fitted sheet has a depth of 30cm (12"). The Egyptian Cotton fitted sheet comes in sizes from single to super king and available in a wide range of colours. As mattresses get deeper with the addition of mattress toppers, protectors, they need sheets to allow for a good snug fit and avoid the common problem of sheets coming off during the night. They recommend this fitted sheet to sit 8cm (2-3") deeper than your mattress. The fitted sheets are generously elasticated around all 4 corners leading to a solid hold and fit on your mattress. This fitted sheet is suitable for mattress depths up to 22cm (9"). So long as you purchase the correct size of width and length then depth doesn't have to be exact, as any extra fabric tucks underneath the mattress, hence why they recommend taking a slightly larger depth than what your mattress measures.