Quickly customize spine and cover with one letter-sized sheet. Great for presentation preparation. Locking Slant-D rings with GelTab triggers hold 25% more sheets than standard round rings. Endures extreme temperatures. PVC-free, non-stick cover has clear overlay for three-sided customization. Binder Type: Ring Binder Style: View Binder Size Capacity: 1" Binder Sheet Capacity: 270. Green : Cover board contains a minimum of 98% post-consumer recycled content, 100% total recycled content.