The RefrigiWear Cooler Wear Vest is a rugged yet lightweight core-warmer engineered for cold work environments. Built to standards that protect down to 10 °F, it features 7.5 oz polyester fiberfill insulation and a water-repellent, ripstop-coated nylon shell that withstands tough, damp conditions. With stretch-knit side gussets for ease of movement, an insulated knit collar, and draft-blocking extended back, this vest delivers warmth without restricting mobility. Functional design includes two insulated front pockets plus a chest pocket, making it perfect for active tasks in chillier settings.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.