Yupo is a compelling and unique alternative to traditional art papers. It's a synthetic paper, machine-made in the USA of 100% polypropylene. It is waterproof, stain-resistant, and extremely strong and durable. This extraordinary, non-absorbent surface resists tearing and buckling and remains perfectly flat, eliminating the need for soaking, stretching, or taping. Watercolor professionals have found Yupo to be receptive to a variety of aqueous techniques, but it is also ideal for offset printing, silkscreen, debossing, drawing, acrylic painting, and more.