These Sketchbooks are made from our best-selling paper! This premium 80# bright white paper is recommended by Valerie Bendt and Diana Zyke for make-your-own-books, Our highest quality sulphite paper and works well with both dry and wet art projects. There are 50 sheets in each sketchbook. Bundle Includes 1 each: 9X12 Sketchbook, 6X9 Sketchbook, and a Pocket Size Sketchbook. Making it easy to take the right sketchbook with you. Purse, backpack, car, class, etc..