Your Perfect Fit! Designed for comfort, a professional look and oversized function. Curved back spine provides ergonomic grip. Compact design easily houses over-sized indexes and sheet protectors without overlap. Easy-open Soft Click™ locking D-ring opens with one simple motion. Stronger hinge for constant use is created with a special ribbed seal. Premium vinyl sealed over heavy-duty chipboard for the highest quality binder. Includes fast reference label holder. Extra storage for loose documents with front inside pocket. Ring mounted on back lid to reduce wear on paper.