Watercolor Paper by Yupo is winning awards around the world as a unique and beautiful substrate. This 58 lb. cover is made of 100% polypropylene in the U.S.A. It offers incredible strength and is waterproof, stain resistant, and pH neutral. Watercolor professionals find it to be highly receptive to various aqueous techniques. Yupo Watercolor Paper features a non-absorbent, smooth surface that remains flat when wet. This versatile paper may also be used with other art media such as alcohol inks, acrylics, pencil, and much more. The media sits on top of the surface for continued manipulation and lifting. Yupo requires an extended drying time, but finalized work may be sealed for protection once completely dry. Sheets measure 26 in. x 20 in. Sold as a pack of 10 sheets.