A variety of products designed to keep body temperature within a safe range and help workers stay comfortable and safe in extreme working environments. Constructed of durable, high-tech fabrics, these products provide dependable warmth and facial protection. All liners (other than stretch tube, knit caps and balaclavas) come with hook-and-loop chin wraps, and some styles are flame-resistant. Economy liners are water-repellent and feature elastic gap control at the forehead to keep warmth in and cold out. Non-economy winter liners feature a potentially lifesaving reflective safety strip that is visible at night and is designed with a spot next to the ears to hold warming packs, sold separately. To activate, simply open the warming pack, which heats up when all natural ingredients come into contact with oxygen. Heats up to 8 hours. Easy to dispose packs contain no toxic materials. Warming products are universal in size. (Ergodyne)