I dunno, if I'm just weird or what but I cut out some Warm N Natural,,, stuck it under the teflon stuff and it's worked soooo much better then the foam that comes with the covers. I love it. I struggled for years with the foam bunching up under the covers. Finally I just got fed up as it was all damp under neath, metal was rusted and the foam was starting to rip. Tossed it all and grabbed some extra batting. My only problem... that I didn't do it sooner. That said I do need a rectangle board and a new iron. You can only drop them so many times.