Stay warm and ready for any task with the RefrigiWear Heavyweight Flannel Work Shirt, a durable button-up built for cold weather performance. Crafted from thick, premium flannel, this shirt delivers exceptional insulation while maintaining a rugged, timeless style. Perfect for outdoor jobs, chilly workshops, or casual weekends, its heavyweight design ensures lasting comfort and protection against the elements. With a classic fit and sturdy construction, this flannel work shirt is your go-to choice for tackling tough days in cool conditions. Upgrade your workwear collection with this reliable cold weather essential today! 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.