Woodland Cold Weather pants are made from 50% nylon and 50 % cotton. These are very nice pants and they look like the standard issue 6 pocket BDU pant except they have snaps to keep out snow. There are buttons on the inside of the waist so you can button in winter liners if needed. Heavy brass zipper, reinforced crotch, seat, and knees. Woodland green camouflage color. Perfect pant for winter or summer use. Available in Summer weight with button fly or Winter weight with zip fly and inside buttons for liners.