Cooling Vest Cooling Method Evaporative - Soak Color Gray Garment Type Vest Features Breathable Comfort Material Nylon Closure Type Zipper Size M Maximum Cooling Time Up to 4 hr Length 25 in High-Visibility No Back Stripe Pattern None Secondary Hazard None Maximum Chest Size 38 in Minimum Chest Size 36 in Cleaning and Care Instructions Hand Wash Includes Battery No Includes Cooling Inserts No