A merino wool blend for extra warmth and moisture-wicking breathability.The Anon MFI® Wool Neck Warmer combines the lightweight all-natural warmth and breathability of merino wool with our exclusive magnetic connection that creates a seamless connection to our MFI-compatible goggles. It wicks moisture for quick-drying, breathable comfort that naturally resists odors. A relaxed fit lets it sit naturally for unrestricted mobility and comfort.