Merino Hiking Crew socks A merino blend sock designed for long hikes and adventures in the wild. Merino wool fibers are moisture-wicking magicians when it comes to keeping your feet cool and dry in the summer or warm and toasty in the winter. Designed with a full, moisture wicking polypropylene heal and toe for impact protection and a softer, cushier underfoot. Zonal, elasticated hold and targeted support for your legs as well as on arch and ankle areas. Features include: Temperature Regulation, Cushioning, Specially Shaped Welt, Elastic Arch Support, and Ventilated Mesh Panel. Composition: 37% Polyamide, 21% Polypropylene, 20% Acrylic, 20% Wool, 2% Elastane.