This boot-length sock is a great choice for durability and comfort in a non-wool fabric. The 50% CoolMax® polyester / 28% nylon / 20% acrylic / 2% spandex construction means you'll stay warm and dry, and the mesh side channels allow better ventilation and breathability. For added comfort, we built in a full terry loop leg and a non-terry vamp to eliminate bulk at the ankle. It's also fully cushioned with a "no-feel" toe seam and a spandex-reinforced arch. And because it's Carhartt, you can depend on it to fit well, last long and work hard.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.