600 Thread Count 100% Cotton 600TC Sheet Set, California King, Blue Solid 100% Cotton Experience true luxury when you sleep on these Sateen woven solid cotton sheets 600 thread count. 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 enhansed with each washing