Simon Hurley create. Stamping Foam are moldable foam pieces with heart cut-outs that are great for creating original and unique stamps. Heat foam with Ranger's Heat It Craft Tool and press foam into any textured surface. This pack contains 2 rectangle foams, both measuring 4.5 in. x 5.75 in. with a removable heart measuring 3.5 in. x 3.125 in., all with a 20 mm depth.