| RefrigiWear Fleece Cap | Black | Ragg Wool/Fleece | One-Size. RefrigiWear When you need some extra warmth to keep your head straight. The Fleece Cap has double sided thick fleece and is skull cap style that fits under hard hat. Great as an addition to other protection for added warmth, it protects both the head and ears. Double-sided thick Polartec® fleece Skull cap style Fits under hard hats RefrigiWear Fleece Cap | Black | Ragg Wool/Fleece | One-Size... - RefrigiWear Fleece Cap | Black | Ragg Wool/Fleece | One-Size. |