ShineVGift LED Sports Armband Flashing Safety Light for Running, Cycling or Walking At Night Set of 2 LED armbands are a fun accessory for concerts, be the life of the party at the next rave with your dancing colored lights When training for a marathon, you will be outdoors before dawn or after dark - don't let your runners world be destroyed because a car couldn't see you on the road - be seen for your personal safety Perfect gift for runners - LED light will not get hot - replaceable batteries included - keep your loved one safe with fast or slow flashing lights Easily Adjustable. Band measures approximately 14 inches from end to end CE ,ROHS, EN471 Certification