Built-In Seatpost Light by Lightskin
If you like to ride like we do it is important for safety to come first and Lightskin has the perfect night rider solution for your bike, the Seatpost Light ($69 USD). Easily integrate the Seatpost Light on your current bike setup. Five high brightness LEDs are there to insure that incoming vehicles can spot you at a safe distance. The Seatpost runs on 2 Alkaline AA batteries and last around 50 hours at full LED light mode and 400 hours on other lower LED mode settings. The Seatpost is water-proof and extremely durable.