Dhb windslam cycling skull caplightweight breathable fleece lined skull cap which can be worn under your helmet adding an extra layer of protection in cold weather featuring a windproof membrane on key panels to cut out wind chill this cap is made from a fleece fabric for added warmth flatlock seams help this fit under your helmet without irritation featureslightweight fleece fabric for warmthbreathable windproof membrane on front and side panelsflatlock seams for comfortreflective inse