FITS Performance Trail Quarter &ndash; Merino Wool Athletic Socks for Hiking, Running Made in USA HIGH-PERFORMANCE: These socks for trail use are packed with design features intended to help outdoor athletes stay at the top of their game. Distance hikers and trail runners alike will love their clever functionality. ULTIMATE COMFORT: Featuring vented lowers to keep your feet cool and extra cushioning in the heel, toe, and arch, these outdoor socks are built to support and protect. Say goodbye to sore, sweaty feet on your next hike or trail run. DESIGNED TO WORK: Extra durability is built into high abrasion areas to prevent the formation of holes and tears, while the patented Full Contact Fit design contours to your foot so that the fabric will never slip or rub. PRIME PROTECTION: Falling just above your boot line, the cuff of these socks stretches slightly higher than a traditional quarter sock to guard you against flying pebbles while on the trail. MATERIAL: The medium weight blend of merino wool, nylon, polyester, and lycra is perfect for running in chilly weather. You can expect superior wicking and breathability from our material, which is designed to keep your feet warm and dry all day long.