Working in the cold can be a challenge when you don't have the right coat. The RefrigiWear Cooler Wear Frock Liner is Comfort Rated to 0°F, features a knee-length design for maximum coverage, and fits perfectly under frocks or lab coats. With clipboard-sized pockets, convenient side seam openings for easy-access to bibs or pants pockets, an insulated knit collar and snap-front closure, this is the liner you need when the job gets cold. Maximum functionality. Maximum coverage. When you're trading the office or lab for the freezing cold, the Cooler Wear Frock Liner has you covered.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.