Sheetsnthings Olympic Queen Size 600-Thread-Count Cotton 600TC, Solid Black Sheet Set, Deep Pocket 600 TC Cotton Experience true luxury when you sleep on these woven solid cotton sheets 600 thread count. Available in Five Sizes: Set includes flat sheet, fitted sheet and two pillowcases 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 enhanced with each washing