The Wigwam Ironman Lightning Pro Low cut is an ultralight running sock featuring the Ultimax moisture management system that rapidly moves moisture upward so it can evaporate quickly. It has been enhanced by the introduction of Dri-Lease fabrication for dry feet, no blisters and no odor. It has foot hugging fit with the feel of cotton in a high performance fabrication. It has breathable mesh air vents and a seamless toe closure. Wigwam is a 105 year old United States manufacturer of socks and provides a 2-year performance guarantee.