Designed for comfort, a professional look and oversized function. Curved back spine received Comfort Certification from US Ergonomics. Compact designs easily houses over-sized indexes and sheet protectors without overlap. Easy open Soft Click™ locking round ring opens with one simple motion. Premium vinyl sealed over heavy-duty chipboard for the highest quality binder. Ring mounted on back lid to reduce wear on paper. Capacity Range [Max]: 2"; Sheet Capacity: 450; Color(s): Green.