Well, there you have it

Standard: Acid-free, 100% cotton, single-side coated paper showing a natural white finish with a slightly textured matte surface has a soft velvet-like feel. Premium: Thick (19-mil) heavy weight (310g) paper with the luxurious style of traditional artists' papers. It has a natural-white, matte finish with a textured watercolor feel. Matted and Framed: Snow white mat with black contemporary frame and acrylic reflection control glass. 16x14. See example