Top-equipped Allrounder. Suited for both the E-Bike, Single-Trail and the City. KED's QUICKSAFE ® adjustment system with its integrated flashing LED's guarantees perfekt fit and outstanding comfort. As an additional Safeways feature the Certus will be standard delivered with the silver full reflective K-Star bottom shell. This superior KED technology for active visibility (K-Star) in traffic without depending on an external light source. The K-Star shell will be identified by car drivers before they have been picked up by the headlight beam. But you have the option to choose from 8 other (non retro-reflective) colors, in style with your own design.