NiteRider Solas 40 Tail Light

If many of your road rides take place at dawn or dusk, make sure you stay visible to motorists with NiteRider's Solas 40 Tail Light. The light's low, 54 claimed grams of weight mount cleanly to your seatpost, and its LED bulbs project up to 40 lumens in two steady and two flash modes. If you're out with a group, use Group Ride mode to calm the light down a little; the setting will still keep you seen without annoying the cyclists riding behind you. When the lithium battery gets low, it's quickly and easily recharged using the included USB cord.