S.P. Richards Company Round Ring View Binder, 1"Capacity, 11 x 8-1/2" Light Blue (SPR19602) Round-ring view binder offers crystal clear, wrinkle-free overlays that resist toner transfer and quality no-gap rings that close securely and resist separation For durability and resilience, the cover material and overlay are made from polypropylene with a heavy board material in the front and back covers Ringlets are attached to the inside back cover instead of the spine so pages lie flat