Lasts all year. Guaranteed! Durability at its finest, Five Star college ruled, reinforced filler paper is double the strength and stays securely in your binder. More durable, patent-pending triangular holes and stronger reinforcement tape resist tearing from rings. Heavyweight, 20 lb. paper resists ink bleed and provides a high-quality writing surface for your notes and homework. Triangle-shaped holes help pages turn more easily. Loose-leaf, college ruled, double-sided sheets.