Bicycle Mud Guard - Duck Flap is like a Fender. Road bikes, BMX, Mountain Bikes, Trail Bikes. Works on Front or Rear of bike. No tools to install. Black on one side The Duck Flap is a mud guard or fender that doesn't rust, rattle, or get loose, but still stops mud, deflects water, intercepts goop, and protects your clothes A mud flap that doesn't require tools to install A conversation piece. Your friends will definitely want to know what the heck that thing is for. This one is black on both sides. Other colors available. Fits on Mountain Bikes, Road Bikes, BMX Bikes, Cross Bikes Wider than most of the competition, so blocks more mud and water