※ Tested and confirmed to work Material Composition: 100% Polyester 【UV Cut & Water-Repellent Air-Conditioned Workwear】 By applying a washable titanium coating to the back of the fan-equipped vest, it protects the skin from infrared and ultraviolet rays while being lightweight, providing a -8°C heat shielding effect, and suppressing the temperature rise inside the workwear. The vest's surface is water-repellent, making it suitable for water activities and sudden rain. 【Vest Specifications】 Reflective tape on the back and both side pockets / Left and right side storage pockets / Left and right chest zipper pockets / Wind tunnel adjustment cord inside the collar / Side cord holes / Inner hem cooling pack pocket (with Velcro) / Left inner hem battery pocket (with Velcro) [Sumwind] Air-Conditioned Workwear Vest 12V High Output 20000mAh Fan & Battery Set 4-Stage Airflow UV Cut Heat Shielding Water-Repellent Thin Ultra-Lightweight Fan-Equipped Workwear Unisex Heatstroke Prevention (M)