450 Thread count Solid White king size Attached Waterbed Sheet Set with Pole attachments 100% Cotton 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( poles are not included) Fitted & Flat sheets are attached at the footer so bed stays made Machine wash with cold water. Softness enhanced with each washing