The product is a pack of 20 sheets of YUPO synthetic watercolor paper, measuring 12″ x 18″. The paper is treated and made of polypropylene material, ensuring high quality for artistic endeavors. With a crisp white color, this paper is suitable for a variety of creative projects, such as drawing, lettering, and watercolor painting. Made in the United States, this product is ideal for artists looking for durable and versatile art paper for their work. Works like an erasable watercolor paper. Watercolor mistakes can easily be wiped off and redone. To avoid paint resist such as oils, clean paper before use. No need for prepping the paper.