Our Water Art Prints are produced using rich, archival, liquid-based inks and luxurious acid-free papers. Watercolor paper has the look and feel of the paper a watercolor artist would use as their canvas. The recycled nature of watercolor paper may cause some small imperfections deep within the fibers of the paper. Manufactured acid-free and chlorine free for strong archival qualities. FSC certified, Green Seal certified,100% Recycled, Acid-Free, Chlorine Free.