Ergodyne - EGO16841 To protect your head from the elements, the 6842 Shoulder Hard Hat Liner has two layers of insulation: a polyester shell and polyester fleece lining. The 100 percent, polyester-fleece lining is soft to the touch for comfortable all-day wear. This lightweight, thermal liner is shoulder-length to keep your head, neck and ears covered. Hook-and-loop closure creates a customizable fit. Liner fits comfortably under hard hats without adding too much bulk. Attach four exterior, hook-and-loop closures to the interior of a hard hat for extra security and warmth. Wear for a dry fit with the water-resistant outer shell. Elastic strip on the forehead area to keep the liner snug against the face to trap body heat and keep cold out. Fluorescent color enhances visibility in low-light conditions to keep workers safe and seen. This liner is ideal for workers in construction, freight, drilling or mining needing warmth and head protection. Use liner while skiing, snowboarding or sledding as well.