DetailsLorpen Socks Size Chart The T3 Light Hiker is a light trekking sock that featuring Lorpen’s T3 and SLS technologies. This fully reinforced and hard-wearing sock keeps your foot cool and well-protected during your days of hiking. COOLMAX® fibers work 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. 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. Lastly, a layer of stretch nylon with LYCRA® adds durability and ensure these socks stay up in your running shoes without slipping down to your toes. The T3 Light Hiker will keep your feet dry, comfortable and protected against any adversity, even with the most summer-y sports shoes. So this sock is perfect as it will give you greater freedom of movement for all-day hikes at any season, especially when it isn’t too cold.