Easy to attach to helmet, handlebar or-seat post. Security Safety Tether Lanyard for Helmet Cam, For-Garmin Edge, Bike Lights Specification: Product Name: Safety Tether Length 20.5cm Material: Nylon Weight: about 3g Package Included: Safety Tether *1 Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.