* EXTRA DEEP POCKET FITTED SHEET: This single fitted sheet is for very deep pocket mattresses. It fits any mattresses with pockets that are 18, 20, 21, 22 and 24 inches deep. This Extra Deep Pocket Fitted Sheet is a perfect fit for memory foam toppers, mattress pads, and pillow tops. Designed with a stretchable elastic all the way around, you can rest assured that this oversized sheet will stay on tight & stay in place! * 400 THREAD COUNT COTTON: This 400 Thread Count extra deep Fitted Sheet is woven with the finest long staple cotton yarns. The high-quality sateen weave provides the true cotton feel that people have enjoyed for years. * NATURAL 100% COTTON SHEETS: Our sheets are made in India with 100% Natural Cotton to ensure the best quality for our customers.