210 gsm or 100 lb paper 30 pages Wiro bound sketch books Rough textured paper 6" x 8" All Wiro sketch books are made with Khadi Rag paper pages. Books with Rough paper have a white cover, books with smooth paper have a gunny (jute) cover. Khadi Rag Paper - Artist Paper made from 100% long fibered cotton rag, resulting in exceptional strength and durability. They are tub sized (surface sized) with Gelatine. For watercolor and all painting and drawign media. For oil paint prime with gesso or acrylic primer. Acid free. This is a handmade item and is not eligible for return or refund.