This T2 Women"s Multisport Ultralight COOLMAX features a layer of COOLMAX that works to move perspiration away from the body, and through the fabric, where it can evaporate quickly, allowing the wearer to feel cooler and more comfortable. Lastly, a layer of Nylon and Ea. LYCRA adds durability and ensure these socks stay up in your shoes without slipping down to your toes. The T2 Women"s Multisport Ultralight COOLMAX is perfect for biking, running, or any active sport. With these socks your feet will stay dry and comfortable all day long.