Solid Split-Top -King: Adjustable King Bed Size Sheets, 4PC Bed Sheet Set, 100% Cotton, 600 Thread Count, Sateen Solid, Deep Pocket (White) These Sheets & Pillowcase Sets are 100-Percent Cotton, Sateen Weave- 600 Thread Count Per Square Inch. The Higher the Thread Count the Softer and Thicker the Sheets Become Split Top King Sheets set Includes:ONE Flat Sheet 110 Inches Wide X 102 Inches Long,ONE California King Fitted Sheet 78 Inches Wide X 80 Inches Long (Splitted at Top) with 6 Corner Pockets to Fit 18" Deep Pocket Adjustable Mattress &TWO King Pillowcases 20 Inches Wide X 40 Inches Long each Fully Elasticized Fitted Sheet with Double Elastic on Each Corner for Better Support These Top Split (Head Split) Sheets Sets are Perfect for Split-Top Adjustable Mattresses or Flex-top Mattresses. Available at a Discounted Price! Royal Tradition Warrants All its Products Against All Defects Machine Washable- Cold Water to Prevent Shrinking on Delicate Cycle with Mild Detergent, No Bleach. Dry on Low Settings. To Avoid Wrinkles We Highly Recommend to Put Your Cotton Bed Sheets and Pillow Covers on Your Bed Right After Pulling Them Out of the Dryer