With fabric that is 30% heavier than most other thermals, our heavyweight cotton thermal bottom helps keep you warm no matter how long you remain outside to finish the job. This knit features a double elastic waist for comfort, reinforced seams for durability, and comfortable rib-knit leg to lock out the cold and seal in the warmth. 9.5-ounce, heavyweight, 100% ring-spun cotton Rib-knit cuffs Reinforced stitching