Triplex (3ply) business cards is a type of cardstock that is composed of three layers of paper fused together. It is made with Mohawk Superfine paper on the outside and Colorplan paper for the middle layer, making it thicker and more durable than traditional cardstock. This makes it an ideal choice for high-end business cards, as well as other print materials such as postcards and wedding invitations. With a thickness of 36pt, 3ply business cards provide a premium and very durable feel.