Trekwell 2 LED Slap Bands, Glow Bracelet, High Visibility Running Armband Includes Batteries, Glow In The Dark 2 LED Bands - Give unaware drivers over 650 feet of warning time in low light situations, batteries are included and replaceable. Night Safety Gear - Press once for on, a second time for strobe to increase driver awareness, third for flash, a fourth press for&nbsp;off. Sports Materials - The chafe-free strong sports nylon band will not tear, reinforced stitching will keep the LED strip in place. Best Value &ndash; As an American based sports safety company, we source only performance materials from site visited manufactures. 3 YEAR GUARANTEE  We will gladly send a full refund or replacement if you have any issues!