The Pacon Dual Ruled Composition Books feature two alternating ruling styles. The right-hand page offers a 3/8" wide ruling for traditional note taking and the left-hand page features a 1/4" grid ruling to draw coordinating graphs, illustrations and interpretations. Note taking in this manner engages both hemispheres of the brain. These durable, hard cover, one-subject books feature a Dark Gray cover with White paper on the inside. 100 Sheets (200 Pages). Book measures 9.75" X 7.5".