Our Porpoise super king fitted sheet offers you beautifully soft bedding that requires minimal effort. Made from 100% Cotton, 300 thread count Percale, these sheets are super breathable creating a comfortable, fresh and cool night's sleep. The flexifit construction guarantees the ultimate fit for a variety of mattress depths up to 35cm, with flexible end panels that grip the mattress corners and a fully elasticated hem that holds the sheet in place underneath the mattress to prevent movement during the night. Super King bed: 180 x 200. Care and use: Wash before use. Machine wash warm. Wash separately. Do not bleach. Tumble dry low. Warm iron. Do not dry clean.