Product DescriptionThe Blackburn Mars Magnetic Tail Light provides an affordable and versatile way to stay safe. A dual-purpose mount either "clips" magnetically onto a jersey, backpack, or pannier, or wraps around a seatpost. Seatpost range is limited, since the only adjustability comes from the stretchy rubber loop at the end of the nylon strap. However, the magnetic clip of the Mars Magnetic rear makes this such a versatile light, there should always be one close by in your cycling kit.
Mtbr Bike Lights Shootout - over 50 bike lights reviewed, photographed and measured here.