Just because it s lightweight doesn t mean it can t handle the workload. Protecting in temps down to 10degree(s)F, the HiVis Cooler Wear Jacket keeps you warm and visible, even in the challenging conditions of working in coolers or on freezing outdoor jobsites. The coated, water-repellent, ripstop outershell of the HiVis Cooler Wear Jacket guards against rips and tears, while keeping you visible in hazardous areas, so you can focus on the job. Plus, lightweight insulation keeps you comfortably warm without weighing you down. Pair the HiVis Cooler Wear Jacket with Cooler Wear Trousers or Cooler Wear Bib Overalls for complete cold-weather protection that resists wear and tear on the job. Sizing Instructions: For the most accurate fit, take your measurements over the base layer of clothing you intend to wear with this RefrigiWear gear (such as thermal underwear, jeans or a sweatshirt) and refer to the size chart for this product.