Bike lights are essential when you're riding at night, but they're way too easy for someone to rip off. With Paul Cocksedge's Double O bike light, you won't have to worry about getting it stolen ever again.
The Double O bike lights fit securely around a D-lock. If you feel like being even more protective, you can just as easily take the light with you. Using magnets, lights are easily mounted on the handlebars and behind your seat. There's a white light to lead the way and a red light so people behind you know you're there.
Not only does the ability to slide around a D-lock make these little lights appealing, but the donut shape is a stylish look for a bike light in general.