The N-FERNO Balaclava by Ergodyne is a cold weather face mask made of 92% polyester and 8% spandex. It features a seamless single layer construction to provide warmth and wind protection without restricting vision, hearing, or breathing. The balaclava has a skull cap design that pulls over the head and covers the neck, face, and head while leaving the eyes, nose, and mouth areas open. It can be worn under a hard hat or helmet. The balaclava comes in black and is machine washable. It provides warmth and protection from wind chill down to -20°F.