Different light technologies for different urban riders. The MOB's have a range of weapons to beat the competition. Like 3 rear interchangeable straps including one to fit aero posts. Their beams range from ultra-focused to ultra-wide so they never get caught out. And you ain't never seen flash patterns like these before. Take a look here at more of the MOB's unique characteristics. MATERIALS UV-Resistant Industrial grade silicone. Polycarbonate Lens, Polycarbonate Optical grade PMMA Lens, Hard-Anodised aluminium fascia. BIKE ATTACHMENT Three removable silicone REAR light straps for posts 22-32mm and AERO POST COMPATIBLE. LIGHT DIMENSIONS 26 x 76 x 62mm WEIGHT 39g USB Rechargeable Lithium Polymer battery OUTPUT 44 lumens LED Rating Three removable silicone REAR light straps