Enjoy the Luxurious wrinkle free 650 Thread Count 70% cotton 30% polyester. The waterbed fitted sheet is similar to the flat sheet except it has an extra triangular fabrics sewn at the four corners. Both flat and fitted sheets are sewn together by the footer so bed stays made. The extra triangular fabric sewn at the four corners of the fitted waterbed sheet are turned over the corners of the water mattress and that is how you dress your sheets on your bed.  In addition, the fitted sheet is always made 12 inches larger than the waterbed mattress from the width and the length, so extra fabric can cover the mattress sides when made. The Poles attachment feature is an additional feature that is used to keep the triangular fabric fully opened so fitted sheet doesn’t come off easily. 
Sizes & Dimensions
- Queen Size Attached Waterbed Sheet Set: One Queen Flat Sheet 72 inches wide x 93 inches long, One Queen Fitted Sheet 72 inches wide x 93 inches long and Two Standard Pillowcases 20 inches wide x 30 inches long each. ( Flat & Fitted are attached by the footer)
- King/California king Attached Water bed Sheet Set: One King Flat Sheet 84 inches wide x 93 inches long, One King Fitted Sheet 84 inches wide x 93 inches long and Two King Pillowcases 20 inches wide x 40 inches long each. (Flat & Fitted are attached by the footer)
Note! Poles are NOT included