For starters, they're bright. While I ended up receiving two red lights instead of one of each color, I just put the other red light on my helmet.The mounting of the light is straight forward, and because of the rubber strap, you can secure the light on many different areas of the bike. Mounting the light on my helmet was just as easy. I have my tail light next to the wheel hub, so it's out of the way of my panniers.Only negative so far is that the clip between the strap and light itself is nearSee full review