This Keeper Ultra bungee cord features an Ultra hook with a glass-filled nylon outer sheath and a steel core for super holding power - up to 3X stronger than conventional hooks. Made from premium grade, long lasting rubber, the bungee cord also features a durable, UV resistant outer jacket. Keeper is the expert and leader in branded products and services people trust to ensure their personal property is reliably secured, transported, and stored. These well engineered products are the most trusted to provide unique, simple solutions for specific everyday needs, offering reliability, security, safety, and ease of use.