The N-Ferno 6829 Freezer Balaclava Face Mask features two layers of high quality, stretchable acrylic rib knit material for protection from mild to extreme cold weather environments. The dual-layer, heat-trapping acrylic material provides consistent warmth in cold storage and cold environments without being overly bulky. The longer length offers extra coverage for your head and neck and can be tucked into your jacket to seal out the cold. Reflective accents enhance visibility at night or in low-light conditions. This versatile balaclava provides the cold-blocking protection of a full-face mask but can also be rolled up and worn as a beanie. This balaclava face mask can be worn alone or under hard hats, ski helmets or other head protection. This is the perfect warm face mask for those who work in construction, freight/baggage, drilling/mining, oil/gas refining, iron/steel, delivery/service, landscaping/grounds, warehousing and working in refrigerated areas. Can also be worn as a ski face mask or worn hunting, climbing, running, cycling, boating, skating or other outdoor sports.