Carhartt's Relaxed 1/2-Zip Thermal Shirt is a great choice for those who need a shirt that will keep them warm without being too bulky. The 8.25-ounce, 58% cotton / 39% polyester / 3% elastane textured double knit is comfortable and the mock neck with half-length zipper provides just the right amount of coverage. The rib-knit cuffs and rolled-forward shoulder help to keep the shirt in place, while the side-seam construction minimizes twisting. The handwarmer pocket with sewn on Carhartt patch is a nice touch, and the heat transfer back neck label ensures that you can always find the right size. Whether you're working outdoors or just enjoying a cold day, Carhartt's Relaxed 1/2-Zip Thermal Shirt will keep you comfortable all day long.