Stay safe with the Lazer Lane tail light---a necessity for any commuter or night time rider. Featuring a 3 setting rear light and a dual setting LED laser that projects a 3 foot virtual bike lane for added safety, it is great for night riding and commuting. 2 LED lasers project a virtual bike lane onto the road. The light attaches to seat post and comes with 2 mounting strips to fit most seat post sizes. Water resistant.