100% Cotton Percale Sheet set (Sage, King) Experience true luxury when you sleep on these Percale woven solid cotton sheets 300 thread count. 300 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