Stamping Foam - 2pc - 4.5" x 5.75" eaSimon Hurley created Stamping Foam are moldable foam pieces that are great for creating original and unique stamps. To use, heat foam with a heat gun. Then, press the foam into the textured surface and hold it in place for 5 10 seconds. Ink with Ink Pads and stamp. The foam can be reheated and remolded to use over and over again. Includes 2 pieces of foam each measuring 4. 5 x 5. 75 with a 20 mm depth.