DreamFit Degree 2 Choice Natural Cotton Sheet Set - Color Blue - Split King Patented DreamFit Guaranteed to Fit Guaranteed to Stay On construction fits any sized mattress. High Performance Elastic sewn around entire sheet- 4X wider and 20X stronger than standard elastic. Patented strap design guarantees your DreamFit fitted sheet will stay put even with the addition of feather beds, mattress toppers, or foam. 1-Year Warranty Covers Workmanship & Material Defects.