My Colors Cardstock is manufactured from high quality, virgin pulp which gives the papers long fibers. Long fibers allow for cleaner folding and scoring without cracking and nice, clean cuts if you are die cutting. Using only soy dyes, they are core-dyed, allowing for optimal color absorption throughout the paper. The perfect start to your scrapbooks, cards and other paper crafting projects! This package contains 25 12x12 inch cardstock sheets (smooth on both sides).