Moisture-Wicking, Odor-Free Merino Blend Wool Performance. The Lightweight Hiking Quarter Sock is built for comfort and performance on long days training or on the trail. Made with a wool/nylon blend, the Lightweight Hiking Quarter Socks focus on moisture-wicking and breathability, providing performance and comfort while remaining odor-free thanks to the natural properties of merino wool. With targeted cushioning, a reinforced heel and toe, and a 4" height, these socks keep feet cool and comfortable, whether logging miles on a thru-hike or getting the legs ready for ski season in the gym. Constructed for all-day performance, the Lightweight Hiking Crew Sock keeps feet dry, comfortable, and odor-free during active use on the trails and beyond.