Sheetsnthings 100% Cotton Bed Sheet Set - 600TC, Twin Extra Long (TXL) Solid Sage - Soft, Deep Pocket, 3PC Sheets Experience true luxury when you sleep on these woven solid cotton sheets 600 thread count. Set includes one flat sheet, one fitted sheet and one pillowcase 600 thread count.Thread count is the number of threads per square inch of fabric--the higher the thread count, the thicker, more durable and longer lasting the material Fitted sheets will fit mattress up to 18 inches deep ,Elastic all around for a perfect fit machine wash.Softness enhansed with each washing