Deluxe and Super Soft 300 Thread Count, 100 Cotton Attached Waterbed Sheet set with Pole Attachment. Fits mattresses up to 15" deep. 4 Piece King Size, Black 100% Cotton Deluxe and Super Soft 300 Thread Count, 100 Cotton Attached Waterbed Sheet set with Pole Attachment. Fits mattresses up to 15" deep Fitted sheet pockets are made withPOLEattachment for better hold. Fitted & flat sheets are attached at the footer so bed stays made 4" hemming, flats & pillowcases, Machine-washable Hypoallergenic, Perfect for those with allergies King Size Set Includes One Flat Sheet 80X96", One Fitted Sheet 72X84" and Two King Pillowcases 20X40" each