• U.S. Army AR-670-1 compliant; used by the U.S. Military
• Polyester and spandex material for extra stretchability and comfort
• Anti-odor defense and anti-microbial treatment
• New breathable and moisture wicking grid fleece material
• Elastic waist band and close fitting ankle cuffs for trapping heat
• Used in the harshest environments around the world as the 2nd layer of defense against extreme cold weather