Reflective Armband (Set of 2) &mdash; LED Flashing Running Lights &mdash; Night Safety Light &mdash; FREE BATTERIES, Flexible, Fully Adjustable Elastic Extender - Designed for Running, Jogging, Walking, or Cycling FREE BONUS: Each armband comes standard with two fully-charged batteries, but you also receive two (2) additional battery packs to keep you exercising longer and harder. VERSATILE WEAR: Our LARGE RED band is designed to fit your upper arms, calves, or other larger body parts. This band is made with a flexible, elastic extender that reaches a maximum circumference 16 LIGHTWEIGHT & ADJUSTABLE: We offer the only LED bands on the market that come standard with a stretchable elastic extender to maximize your comfort. Comfortable for children and adults alike. Made of lightweight, durable nylon, you wont find a better safety device for running, jogging or walking. HIGH VISIBILITY: Featuring three safety modes at the touch of a button  steady, slow flashing and rapid flashing. Whether youre running, cycling, jogging, walking the dog, or just outside, youll be visible and easily seen while you enjoy dusk or night time activities. Enjoy both high visibility and maximum security. 100% MONEY BACK GUARANTEE: We are so sure that you will be satisfied with your purchase that we offer a 100% money back guarantee with each purchase.