The Aamstamp Cushion Boards are made of polyurethane material and is designed to give cushion to your products while they are being printed. Comes in Full Set: Soft, Medium and Hard. They keep the type and dies from penetrating your product while at the same time allowing the type and dies to gain enough impression to give a crisp clear imprint. These Set of Aamstamp Cushion Boards are used for printing one to four or more than lines of type and will keep the type for penetrating your product.