Nite Ize LED Run Vest BE SEEN + SAFE DURING NIGHTTIME ACTIVITIES - This neon, reflective safety vest features two bright red LED strips making the wearer instantly visible after dark BUILT FOR RUNNING COMFORT + SAFETY - With front and back LEDs, reflective accents, and bright neon coloring, it's perfect for activities where visibility is paramount. The fit is very adjustable and is designed for serious running comfort ADD TO YOUR CAR EMERGENCY KIT - Not just for exercise, if you find yourself with a roadside emergency, you'll want the added protection of this bright safety vest and it's integrated LEDs to keep you visible to other motorists DURABLE, WEATHER RESISTANT COMFORTABLE DESIGN WITH POCKETS - When rain, wind, and snow don't slow you down, you can count on this weather resistant vest to charge onward with you. One of the two back pockets is also weather resistant REPLACEABLE BATTERIES INCLUDED - Powered by replaceable 2032 lithium batteries that last up to 100 hours, this safety vest can be used over and over again WORRY-FREE GUARANTEE - all Nite Ize products are backed by our Worry-Free Guarantee