If you love water coloring and mixed media, you are going to absolutely need this 12" x 12" package of Watercolor Paper from Art Philosophy and Prima. This paper pad includes 12 sheets of 100% cotton paper that weighs 140 lb. or 300 gsm, which is a heavyweight cardstock. This paper is also cold press paper which is perfect for water coloring with its small indentations and divots on the surface. This paper is acid and lignin free. This paper can be used for mixed media painting, collages, and water coloring. It can be used with acrylic paints and mediums, scribble sticks, stamps, stencils, and other crafting mediums and products (all sold separately) to produce endless creative possibilities.