Crafted from 100% expedition weight polyester, these balaclavas provide optimal warmth without sacrificing comfort. Featuring an adjustable eye opening for personalized fit and convenience, they are part of the Extreme Cold Weather Clothing System (ECWCS), ensuring top-notch defense against freezing temperatures. The breathable fabric ensures breathability, allowing for comfortable wear during extended periods. Designed to cover the head and neck entirely, they provide comprehensive protection against the elements.