WOW!! What if you used your mattress pad and the aluminum foil and cut your sheet cover a bit bigger then made a casing to run narrrow elastic thru and then you could easily remove it to launder!!??!! I will try this for a quilters ironing surface...I make my regular ironing board covers with elastic in them to fit. Just leave a longer tail of elastic to tie it down tight. Sometimes I can not undo the knot to reuse but i keep lots of elastic around...