U-Create Sketch Book, 11" x 9", Acid & Lignin Free, 57 lb Paper (53007) Ucreate sketch book medium weight drawing paper 70 perforated sheets of 57 lb. Paper suitable for ink, pastel, crayon and pencil 11" x 9" Durable board cover, spiral binding and extra heavy chipboard back for better support Acid and lignin-free paper