INNOMAX Convert-A-Fit Percale Fitted Sheets, Solid, Queen, Seafoam 50% Long Strand Combed Cotton; 50% Polyester Made in the USA and Imported Convert-a-fit sheets fit all types of mattresses including RV's, sofa beds, pillow tops up to 12thick Convert-a-fit sheets fit soft sided & Wood Frame waterbeds, airbeds and even traditional mattresses Convert-a-fit sheets fit are attached at the center foot so you don't have to struggle to make the bed Convert-a-fit sheets simple stitching line allows for total sleeping comfort & full range of movement Convert-a-fit sheets include top & bottom sheets & 2 pillowcases