Sheetsnthings Un-Attached Waterbed Sheet Set, 100% Cotton -Solid Chocolate, California King Size- 600TC, Soft Watered Sheets Material: 100% Cotton, 600 Thread Count. Fabric is Durable, Comfortable, Absorbent and Breathable California King4-Piece Un-Attached Water BedSheet Set Includes: OneCal-King Flat Sheet 110 inches wide X 102 inches long, OneCal-King Fitted Sheet 72 inches wide X 84 inches long and TwoKing Pillowcases 20 inches wide X 40 inches long each Fitted sheets will fit mattress up to 18 inches deep ,Elastic all around for a perfect fit Unattached waterbed sheet sets are made just like the regular sheets where fitted and flats are not attached Care instructions: Machine washable