Shine on every run, day or night! The Amphipod Xinglet Optic Beam Max Rechargeable Vest is ultra-light at less than 3 oz and more durable than ever. It features a 12-hour solid and 23-hour flashing runtime. With front and back reflective zones and adjustable side boosters, visibility is top-notch. The vest offers eight lighting modes, plus slow and fast rainbow effects. Fully adjustable and moisture-resistant, it's even USB-C rechargeable!