PRO-ART- Canson XL Watercolor Paper Pad. The Canson XL Range was developed to deliver papers made with recycled content using sustainable practices without sacrificing quality! Inside each pad is the finest quality paper, tested by professions and educators. Made without acid, lignin, or chlorine the paper ensures lasting beauty. Cold Pressed with a durable surface. This package includes thirty 12x18 inch sheets of 140 lb cardstock. Made in USA.