The Secure and Sit Fitted Sheets are designed to help with positioning when you are in bed. They have a smooth satin central panel making turning in bed much easier as well as preventing bed clothes becoming tangled. The raised edges of this sheet are made from a polycotton fabric, providing you with extra grip and increased stability when you get into and out of bed. Fully machine washable, these sheets fit easily onto mattresses and are available in multiple sizes. May be ironed on a medium heat.