The 50% CoolMax® polyester / 28% nylon / 20% acrylic / 2% spandex construction in this new sock will keep you warm and dry all day, every day. We've also included anti-odor properties and mesh side channels for better ventilation and breathability. The non-terry vamp means it won't bunch up at the ankle, while the terry loop leg, "no-feel" toe seam and fully-cushioned foot and leg provide added comfort. For a more secure fit, we also added a spandex-reinforced arch. When it comes to rugged, high-performance socks, this crew-length item is a great year-round workwear choice.For over 115 years, Carhartt has manufactured premium workwear known for exceptional durability, comfort, quality of construction, and fit that you can feel in the fabrics and see in the performance.