Government Issue Cold Weather Pant Liners, USA. Outer covering is made of 100% nylon. Batting is made of 100% polyester. Quilted, OD green. These have button holes that are made to button inside the M1951 wool field pants and also the winter weight BDU trousers. *Note'* Long inseam available will fit into a regular inseam pant. New. Olive Drab or White Color.