The RefrigiWear Lightweight Mid-Layer Thermal Bottoms add 4–8°F of warmth, making them ideal for outdoor or freezer work. Made from a 92% polyester and 8% spandex 4-way stretch fabric (160g), they provide flexibility and comfort on the job. A stretch waistband ensures a secure fit, while the brushed lining, flat seams, and closed fly lock in heat. Available in sizes S–5XL, these durable base layer bottoms help you stay warm, comfortable, and focused in even the toughest cold-weather conditions.