A bungee cord is an elastic cord composed of one or more elastic strands forming a core, usually covered in a woven nylon or cotton sheath. The sheath itself does not materially extend elastically, but it is braided with its strands spiralling around the core so that a longitudinal pull causes it to squeeze the core, transmitting the core's elastic compression to the longitudinal extension of the sheath and cord. Specialized bungees, such as some used in bungee jumping, may be made entirely of elastic strands.
Bungee cords were originally used in parachuting to assist in opening the old-style parachute container after the ripcord was pulled.
Today, bungee cords are most often used to secure objects without tying knots and to absorb shock. Inexpensive bungee cords, with metal or plastic hooks on each end, are marketed as a general utility item. This form is also known as octopus, or "occy", straps in Australia, these can be a individually, or a set of four hooked straps held together by a metal ring allowing the occy strap to secure items around various tie points, for example a suitcase to a car roof rack.
The Oxford English Dictionary records the use in 1938 of the phrase bungee-launching of gliders using an elasticized cord
Bungee cords were originally used in parachuting to assist in opening the old-style parachute container after the ripcord was pulled.
Today, bungee cords are most often used to secure objects without tying knots and to absorb shock. Inexpensive bungee cords, with metal or plastic hooks on each end, are marketed as a general utility item. This form is also known as octopus, or "occy", straps in Australia, these can be a individually, or a set of four hooked straps held together by a metal ring allowing the occy strap to secure items around various tie points, for example a suitcase to a car roof rack.
The Oxford English Dictionary records the use in 1938 of the phrase bungee-launching of gliders using an elasticized cord
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