This sock is packed full of fantastic features to ensure your feet are the last thing you worry about on your hike. The PhD® Outdoor Crew Sock offers great fit and outstanding comfort. These durable socks feature Indestructawool™ technology which enhances the socks in high wear areas ensuring your sock performs better for longer. The 4 Degree® elite fit system ensures the sock is snug tot he foot fit whilst the Virtually Seamless™ toe provides extraordinary comfort in any trail shoe. These socks have meduim cushioning which provides impact protection and great comfort when your feet are working hard out on the mountain side.