The KnotBone Adjustable Bungee by NiteIze is an innovative bungee cord. With carabiner clips instead of open hooks at each end, it not only attaches to your anchor points, it locks there. Instead of elastic that loses its stretch over time, the KnotBone has a durable, high quality cord that threads through each end, and adjusts from 28" to 6". Once you have it adjusted to the right length, secure it in place with a simple wrap-and-lock motion. The KnotBone bungee stays right where you attach it, pulls securely to the exact length you need, and locks there.