Simon Says Stamp dies are usable in nearly every machine on the market. Use wafer dies on cardstock, felt, fabric, even shrink plastic! You can use wafer thin dies to cut, stencil, emboss and create! Simon Says Stamp clear stamps are high quality photopolymer and made in the USA. This stamp and die set includes the 6 x 8 inch stamp set Happy Mail (sss202490c) and the Happy Mail coordinating wafer die set (sssd112573c).