sentences:  Poncho liner
  
  A poncho liner is a piece of field gear originating in the United States military intended to provide warmth in mild temperatures used as a field expedient sleeping bag when attached to the standard issue poncho by means of integral lengths of material which are looped through the poncho's eyelets.A poncho liner is also known as a woobie, a post-Vietnam term conjectured to have derived from the name for a child's security blanket in the movie "Mr.