6867 Shoulder 3-Layer Hard Hat Liner has three layers of insulation: a quilted shell, foam mid-layer and thermal, fleece lining. This lightweight, thermal liner is shoulder-length to keep your head, ears and neck covered. Liner fits comfortably under hard hats without adding too much bulk. Hook-and-loop closure creates a customizable fit. Attach four exterior, hook-and-loop closures to the interior of a hard hat for extra security and warmth. Elastic strip on the forehead area keeps the liner snug against the face to trap body heat and keeps cold out. Small pockets by ears hold regular-size hand warmers (not included). For extra face coverage attach, N-Ferno 6870, 6872 or 6874 mouthpieces (not included). This liner is ideal for workers in cold environments wearing headgear or for recreational activities while wearing a helmet.