Part of the Extreme Cold Weather Clothing System (ECWCS), the Generation III Balaclava is a light yet warm head covering. Made of a Polyester/Spandex blend, this balaclava wicks away moisture and is one size fits most.Cold Weather Technology To Keep You WarmMoisture Wicking To Keep You DryOne Size Fits MostComfortable And Soft Design93% Polyester / 7% Spandex