Wilson Jones Heavy Duty D-Ring Binder with Extra Durable Hinge, 5-Inch, Black (W384-50NB) Features our strongest binder covers and extra durable hinge for years of reliable use 5 inch D-ring binder holds 950 sheets Custom formulated, PVC Free polypro material lasts up to 10X longer than vinyl Never-gap rings close tightly to keep papers secure Two interior pockets provide additional storage