sentences:  Even when soaking wet, the poncho liner wrapped around a soldier would trap body heat.Many servicemen and women go through great lengths to find ways to keep their poncho liners as long as possible, even when they leave the service often upcycling or custom tailoring them into smoking jackets, hoodies, blanket coats or robes.The poncho liner found wide acceptance amongst US troops in Vietnam, providing just enough warmth for cool tropical nights but still being light and small.