Stripes Ivory 320 Thread Count cal king size Attached Waterbed Sheet Set 100 % Egyptian Cotton By sheetsnthings 100% Cotton Experience true luxury when you sleep on these woven stripes cotton sheets 320 thread count. Egyptian cotton King/ Cal king water bed sheet set 4" Hemming with Piping, Flats & Pillow cases 320 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 & Flat sheets are attached at the footer so bed stays made machine wash with cold water.Softness enhansed with each washing