Windzip Vest - Cadet NavyUtility is the optimal descriptor of the Relwen vest. Slimmer fitting with built in functional stretch, the thin yet protective warmth makes this our cold weather warrior around the house, presuming you subscribe to the same eco friendly thermostat. Alternatively, a fantastic layering piece that simply fortifies every other jacket in our arsenal as temps begin to dip.' shell: 94% nylon, 6% spandex, full dull stretch, breathable, semi water resistant,