Our stamps are made from yellowing resistant photopolymers and are latex free. These polymers are designed and produced for the printing industry and are meant to carry and transfer ink. {This is why they stamp so well!} The stamps from Asia are produced from vinyl or silicone based materials, and aren't designed for a quality impression. We are proud to say we use the highest quality photopolymer for our stamps and they are PROUDLY made in the USA.