This government issue 100% polypropylene is some of the most sought after cold weather base layer available. It blows the new expensive name brand stuff out of the water. Very soft 1/16 in. thick fleece texture next to your skin keeps you comfortable. Our troops use these long johns with their extreme cold weather gear. Polypropylene is specially engineered to wick away moisture from your skin to keep you warm and dry. Unused condition. Elastic waistband, ribbed cuffs at ankles. Genuine U.S. Military Surplus. Colors may vary between brown (pictured) and light tan. No one will see it anyway!