The Madison Isoler Thermal Skullcap. Perfect under the helmet protection from adverse conditions, made with a fleece-backed Lycra for maximum warmth without compromising your helmet\'s fit.Madison Isoler Thermal Skullcap FeaturesUnder-helmet protection from the wind chill and rainFleece backed Lycra for maximum warmth without compromising your helmet\'s fitMesh over the top of the head to aid in ventingFlatlock stitching ensures there is no unwanted rubbing or irritationReflective logo and details for added visibility