Lorpen T3 Women's COOLMAX Ultralight Mini Sock UK Size 5 - 7.5 Med M3USW - Berry T3 Women's Ultra Light Mini Sock features 3 separate layers of fibers that work together for comfort, support, and moisture management. A layer of TENCEL provides a layer that is soft to the touch and comfortable against the skin. It is a fully biodegradable fiber that is made from trees from sustainable farms. The COOLMAX layer 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. These 3 Layers make the T3 Women's Ultra Light Mini Sock perfect for biking, running, or any active sport. With these socks your feet will stay dry and comfortable all day long. Lorpen T3 Women's COOLMAX Ultralight Mini Sock UK Size 5 - 7.5 COOLMAX TENCEL Package Dimensions : 26 x 10 x 2 cm; 55 Grams