Brownline 2013 Daily Professional Appointment Book, Twin-Wire, Black, 11 x 8.5-Inches (CB960.BLK) Twin-wire binding with soft, black lizard-like cover Professional appointment book for up to four people Four columns with appointment schedule 7:00AM-8:45PM in 15-minute intervals on each page Recycled with a minimum of 30% post-consumer content Acid-free paper and vegetable oil based inks