Stay warm, dry, and safe during low-light runs, from twilight to midnight.

When you’re biking — especially in low-light conditions — wearing a reflective vest can help keep you safe while you're sharing the road with cars. Not only will the best reflective vests for cycling ...

The running gods played a cruel trick on us when they made some of the best weather for running into the time of year with the least sunlight. Especially as fall marathon training reaches its peak, so ...

A typical reflective object sensor consists of an infrared light emitter diode (IRED) and an NPN silicon phototransistor mounted side-by-side on parallel axes in a compact black plastic housing. The ...