Nathan‘s Human Propulsion Laboratories dedicate themselves and their products for the active sport community offering gear to make cycling, running and the like more enjoyable and save.
In the later category, the safety gear, Nathan offers LED Vests (which look a bit like safety gear for street worker) but more practical, functional and better looking wrist and ankle bands that can be switched on when the sun is down for the late evening run or bike tour.
These bands are visible up to one mile and re replaceable coin cell batteries give light up to 150 hours, so you can go on a very long run.
The wrist and ankle bands have a zippered pocket for small essentials, are made of lightweight fabric with Velcro closure.
Available here for a more than modest price of $9.49, a bargain compared to the benefit and disaster it can help preventing by making especially runner more visible during night.