Wilson Jones Heavy Duty Round Ring Binder with Extra Durable Hinge, 1.5-Inch, PC Blue (W364-34-7462) Features our strongest binder covers and extra durable hinge for years of reliable use 1 1/2 inch round ring binder holds 350 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