The Thermal Merino Reversible Headband is streamlined, straightforward, and indispensable when the wind means business. It features a double-layer reversible knit so you can go again tomorrow with a whole new look. 100% Merino wool fabric made with interlocking knit for enhanced comfort, breathability, thermoregulation, and odor resistance Reversible design for variety Cleanly finished seams for a bulk-free fit Double-layered for maximum warmth Unisex Smartwool Thermal Merino Reversible Headband