Night runners, morning dog walkers and those who want to be seen need this light up, rechargeable Flashing Reflective Vest! No Batteries required, whoop whoop. It has a great minimalist visibility design. The soft, chafe-free construction provides for superior ease-of-movement. The front and back ultra-bright flashing strobe LEDs are adjustable for both height and waist size. Elements: Bright green optic beam 360° LED illumination Solid and flashing modes, easy push button on-off Quick zip-on, moisture resistant design Front and back reflective booster zones Fully adjustable design (Fits XS-XL) AMPHIPOD XINGLET OPTIC BEAM LITE USB VEST