Ideal for cool-weather starts, slip the Seirus Thermax skull liner beneath your helmet or pack it as a minimalist beanie for light and fast adventures. Features: Ultra-thin Thermax(R) polyester with a bit of Lycra(R) spandex stretches to fit, wicks away moisture and dries quickly to keep you warm Flatseam construction and 4-way stretch improves comfort The Seirus Thermax skull liner features a reversible design-chose from exposed contrast stitching or solid black
