The paper used for this product is a thick cardstock made from regular old paper, such as milk packs. This paperboard is not intended for printing due to the lack of smoothness and is usually used for boxes, mats, and core materials, but has a unique texture. The printing method, because the paper color is black and dark green is not normal offset printing, and it is screen printed. Due to the screen printing process, you can see slight bleeding and color irregularities but it also matches the rough texture of the paper to create a tasteful product.