Wilson Jones Heavy Duty Round Ring View Binder with Extra Durable Hinge, 1.5 Inch, Customizable, Black (W363-34BA) Customizable cover and spine simplify binder labeling and personalization 1 1/2 inch round ring binder holds 350 sheets Features our strongest binder covers and extra durable hinge for years of reliable use; 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