Meet your new best friend when it comes to running at dusk or nightfall. The new Lightbender Rx Lighted Armband is sweatproof, waterproof, chafe-free and changes colors at your direction. Choose between red, green and blue colors and blinking or steady light patterns for added customizable visibility. Red, green and blue LED options available with multi-settings for blinking or steady state light stream. | Nathan Sports Lightbender RX Lighted Armband