Sewn binding opens flat for writing. Permanent, waterproof ink. Premium 20-lb. white acid-free paper. Includes: Table of Contents page; printed date, signature and witness section on each page; space for entering control information; an instruction page; and place-marking ribbon. Pad Type: Notebook; Sheet Size: 10 3/8" x 8 1/8"; Ruling: Ruled; Number of Sheets per Pad: 150.