Designed with insight from trail runners around the world, the Nike Trail Socks deliver durable grip underfoot. A supportive design helps you stay running comfortably when your off-road miles become wet and rocky. For this season's Nike Trail collection, insights from trail runners helped create running gear designed specifically for your outdoor miles. Wool fabric helps keep your temperature comfortable throughout the year. NikeGrip yarn helps keep your foot in place. Mesh between the grip provides additional breathability and allows for moisture drainage. Heel tab helps resist shoe abrasion, while keeping dirt out. Fabric at the heel helps keep your foot secure. Heavier yarns wrap the arch for support.Nike Trail Running Crew socks.