Description: Teufelberger Safety Blue is named for the blue core fibers. If your line is cut or significantly worn the color acts as a warning to the user. Safety Blue has been an industry favorite since it was introduced. Great climbing line with high strength, flexibility, and safety features. Braided Safety Blue is equipped with a blue safety core of polyamide. This core is exposed only when the rope is seriously damaged or has worn down to the point where it must be discarded. The visibility of the blue core indicates that you should exchange the climbing rope. Being 12.7mm in diameter, this climbing rope feels good in your hand, which will help you to work efficiently with the rope and to avoid hand fatigue.