The N-Ferno 6851 Fleece Winter Hard Hat Liner is designed to be worn under hard hats and safety helmets, delivering warmth in cold, demanding environments. Made of high-quality thermal fleece, this hard hat liner features a dual-layer fleece lower section for added warmth and a single-layer on top for lightweight comfort. The full-length design provides coverage of the head, ears and neck, while still fitting comfortably under a helmet or hard hat without added bulk. Extended back cov