Replace only what you need, just the Top Split King Fitted Sheet. This heavy and luxurious Top Split King Fitted Sheet is woven at 1000 Thread Count and 100% Long Staple Cotton. It is quite common that the fitted sheet wears out much sooner than the flat sheet, and that is due to the fact that the fitted sheet is subjected to body and feet friction much greater than a flat sheet. Heavy 1000 Thread Count 100% Long Staple Cotton Luxuriously Soft Fitted Sheet with 32"" Split from the Top and Elastic All Around + Corner Straps Looking for the Complete Set? Find Split Top King Sheets Here Diions Top Split King Size Diion: Top Split King Fitted Sheet 78 inches wide X 80 inches long with 6 corners Fit up to 16 inches mattress deep.