Bungee Jump cord is made out of extremely elastic and durable rubber (the same type used in condoms). Each cord is meant to be used for a certain weight interval, so if you're too heavy or too light for the cord's interval, another cord should be used. If you are too heavy for the cord but you jump anyway, the load on the cord is greater and the cord may not support as many jumps during its life time as intended.

If you are too light and jump anyway, you will experience a sharper recoil than intended and the load on your body increases. Each cord supports a pre-defined maximum number of jumps. A normal number of jumps could be, let's say 200 (this varies with cord type, size, length, etc). This means the cord is not meant to be used for more than 200 jumps. Additionally, each cord should have a backup sling (a non-elastic type, same as used in rock climbing) attached to the cord. This backup sling has the same length as the maximum recommended length of the cord when stretched. The backup sling will take over the load if the cord is stretched too far or if it for some reason would break.

All Bungee Jumping Parts