Convenient storage binder for keeping personal notebook refills. The cover can be rotated 360 degrees for smooth use. It is easy to open the ring by pressing down the axis and sliding the "PUSH" mark side... Ring Material: Plastic Size: Height 8.5 inches (215 mm), Width 7.2 inches (182 mm), Thickness 0.8 inches (20 mm). Ring Diameter: 13mm Product Color Trend:Clear. Cover Pattern: Solid