Sandable Core’dinations Cardstock line features 33 vibrant, trendy shades of heavy-weight cardstock with a lighter shade in the core that creates a unique weathered finish when torn or distressed. ... Use this acid/lignin free Core’dinations cardstock as is on scrapbook pages, handmade cards and more just like you would any quality textured cardstock. Or, tear the edge, sand the top or distress the edges and watch the magic happen on this cardstock for mixed media. The lighter core shows through the distressing and gives it an antique, weathered look without the use of inks. This is a great choice for cardstock for mixed media beginners. Sold in individual sheets and packs of 25.