Kneos Tech LED Sports Armband Flashing Safety Light for Running, Cycling or Walking at Night Set of 2 Kneos LED lighted Adjustable armband- Increases visibility during night sports - be seen by cars after dark when running, bicycling or just walking the dog. 3 modes of operation at the touch of a button - bright steady light, slow or fast flashing - greater visibility while you exercise than safety vests or other reflective sports gear When training for a marathon, you will be outdoors before dawn or after dark - don't let your runners would be destroyed because a car couldn't see you on the road - be seen for your personal safety Durable nylon band encases a flexible LED core - velcro closure is secure and adjustable so you can be comfortable when you run Perfect gift for runners - LED light will not get hot - replaceable batteries included - keep your loved one safe with fast or slow flashing lights Keep Safe and Be Seen When Workout and Working Dog.