Woolpets charcoal foam pads are the perfect work surface for needle felting projects. These pads are firm, extra durable, and will last through many needle felting projects. The open-cell foam allows the felting needle to repeatedly penetrate the surface without it breaking down or falling apart. Other softer foam pads and sponges will quickly disintegrate, eventually leading to little pieces of foam in your projects. Available in different sizes. 1.5 inches thick.