The Composite Matrix back clip features the Clip-On System, with movable clip, for strapped or clipped mounting. The multi-position silicon rubber strap attaches directly to the back plate to secure the light to a wide range of seatpost diameters. The Side Visibility lens extends beyond the body providing 180 degrees visibility, and increasing user safety. The bottom cap can be removed to reveal its integrated USB stick, making recharging convenient and cable free.