When your workouts include running, walking, biking or other activities in the streets, it’s very important that you don’t blend into your surroundings. You want to be easily visible to drivers or you might end up as a skid mark on the pavement. In addition to wearing light colored clothing, and adding reflectors on your bicycle, you can also consider AthLights. AthLights are very small LED lights that use magnets for easy attachment to your clothing. They weigh only 1/3 oz each and feature a metal housing that is resistant to both rain and sweat. AthLights are powered by two button-cell CR927 batteries that should last about 40 hours before they need to be replaced. They have a simple twist on/twist off power mechanism that will keep you visible at night from up to 600ft away by alternating red and white light flashes about once a second. A package of two is priced at $15.95. They can be ordered directly through AthLight or other retailers like Grand St.