Ultra-Bright Wearable Flashing Led Reflector. Super Versatile! Wear On Shorts/Waistband, Hydration Belt, Pack/Bag Strap, Shirt Sleeve/Collar, Vest, Caps/Hats And More. Brilliant Leds! • Add High Brilliance Reflectivity To Just About Anything! • Ultrabright Flashing Led • Simple Press Button On-And-Off • Drugstore Battery For Easy Replacement • Battery Included / Ready For Use • Easy To Attach With Integrated Dual Magnet • Available In Two Shapes And Three Fluorescent Colors • Less Than 1/2 Ounce, Vizlet Led Adds Feather-Light Reflectivity/Brilliant Fun!​​