Are your rollover sofa cushions 'softening up' like ours were after 13 years of use? After pricing replacement foam and encountering severe sticker shock, I had a lightning moment: simply mod a couple of previously used and already-owned 3/16"-thin basic rubber roll-up yoga mats! (you know the kind). Four lengths cut to the proper XY dimensions (our cushions happened to be 22" by 36") with rounding of corners, then jockeyed into place: one each over and under the existing original foam for each of the two sofa cushions. The cushion covers will accommodate the additional volume in fine fashion, and the resulting improvement in stiffness and support for my old failing back has been rather amazing.
Rico.
Rico.
