This notebook has 100 double-sided, graph ruled sheets, 4 squares per inch. It also has a 2 pocket divider, and a water resistant, yellow poly front cover. The perforated sheets make it easy to tear out assignments. Spiral Lock wire binding prevents coil snags on your clothes or in your backpack. Sheets measure 11" x 8-1/2" when torn out. Overall notebook size is 11" x 9-1/8".