Solid White 450 Thread Count cal king size Attached Waterbed Sheet Set with Pole attachments 100% Cotton By sheetsnthings 100% Cotton Experience true luxury when you sleep on these woven solid cotton sheets 450 thread count. cotton King/ Cal king water bed sheet set 4" Hemming with Piping, Flats & Pillow cases Fitted sheet Pockets made with POLE attachment for Better Hold Fitted & Flat sheets are attached at the footer so bed stays made machine wash with cold water.Softness enhansed with each washing