Create beautiful pieces with watercolor, ink, and other wet media all in one spot. Mix colors, add embellishments, and more on this non-stick, waterproof, heat resistant mat. This 12x19. 5 inch package contains one Water Media Mat. This non-reflective, smooth matte surface can hold paper sized up to 9x12 inches and features 12 palette squares as well as guides for framing videos (standard 16x9 inch video format and multiple square positions for popular social media sharing). Imported.