This U.S. Military Polartec Liner was originally worn zipped into the EWOL (Extreme Weather Outer Layer), the 7th and most weather-resistant outer layer in the FREE (Fire Resistant Environmental Ensemble) clothing system. Now ready for a new assignment bringing unstoppable insulation on its own, or to supercharge your own winter parka setup. Designed to zip into EWOL Parka Flame-resistant Polartec polyester fleece Hook-and-loop patches for insignia Parka length