Details: Carhartt Mens Base Force Lightweight Crew (MBL101) is a thermal base layer long-sleeve shirt designed to keep you warm, dry, and comfortable in moderate to cool temperatures. This lightweight, crew neck base layer top uses FastDry and Rugged Flex technologies and odor-fighting fabric. FastDry wicks away sweat and Rugged Flex is for ease of movement, giving your arms a full range of motion. Made of 135 GSM/4-ounces of 100% polyester, this base layer shirt is perfect for layering or wearing alone. Smooth flatlock seams, tagless labels, and fabric cut to move with your body make this versatile, lightweight base layer top comfortable to wear while working or while relaxing on your days off. Conveniently concealed thumb loops keep your sleeves in place when you put on another layer. This lightweight base layer top works as hard as you do to keep you warm, dry, and odor free throughout the workday. Pair it with Carhartt Men’s Base Force Lightweight Bottoms (MBL103) for a complete base layer set.