Tackle the coldest job sites with confidence. The ComfortGuard Coveralls are engineered for professionals who demand warmth, durability, and mobility. With a comfort rating down to -10degree(s)F, these coveralls feature 200g polyester insulation, a water-repellent canvas shell, and a range of practical design elements to keep you comfortable and productive in harsh conditions. 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.