Every sheet of Coredinations Cardstock is acid and lignin-free and of 80 lb weight. This Cardstocks has a core color which "core'dinates" with the surface color. You can choose to keep the core color hidden or add your own creative touch by sanding, tearing, antiquing, or embossing by revealing the colored core. Core Essentials Roayl Blue is a great choice of cardstock for summer projects. It's rich blue would be great for a sky scene on your scrapbook pages or water color for those vacation pages. The front side of the paper has a canvas texture while the reverse side is smooth.