Red LED lights on back have 3 modes: off, solid, flashing Replaceable battery (1 x CR2032 Lithium 3V) powers LED lights (Battery Included) Adjustable closures at shoulders and sides Shine a light on safety in low visibility conditions with the LED Safety Vest - Battery Powered. Red LED safety lights across the back of the vest are powered by 1 replaceable 3V battery and have three modes: off, solid and flashing. The LED Safety Vest also includes 2" and 4" reflective silver tape for increased visibility. Wear the LED Safety Vest over jackets, coveralls, or other insulated gear in comfort with adjustable closures at shoulders and sides. 100% Polyester mesh vest 2" and 4" Reflective silver tape for visibility Red LED lights on back have 3 modes: off, solid, flashing Replaceable battery (1 x CR2032 Lithium 3V) powers LED lights Adjustable closures at shoulders and sides Wear over insulated gear for added visibility LED Safety Vest-Battery Powered