This is a two pack of 36" Long Bungee Cords. Bungee cords, often referred to as "shock cords", are useful for a wide variety of purposes and are regarded as a staple amongst photographers, videographers, construction workers and students. They are commonly used to hold things together such as stacks of books, large quantities and lengths of cables, fences and luggage. The extremely strong, stretchable nature of the material gives it strength when employed. The cord is secured by intertwining the clip located at the end of each cord. When the cord is stretched around the items to be held together and the clips are connected, the cord holds firmly in place.