Do your outdoor cushions need to be rescued? Eva-Dri foam is just what you need. Eva-Dri foam has a unique porous design that drains water immediately, and lets air circulate to dry quickly. Simply remove the old foam from the cover, trace the shape of the cover on the new foam and cut it out (about 5% bigger than the cover) with an electric bread knife. If your covers have seen better days, check out our selection of outdoor fabric.