Gas Cape / Wet Weather Cape / Poncho The gas cape was nothing more then a protective cape to be worn in the event of a gas attack. Later in the war, it became obsolete, however, the gas cape was worn until the end of the war as protection from the elements. Description: button fronted, Fold down collar, Buttons are backed with rubberised material for strength, Flexible rubberised material, Re-enforced holes along side, Opened size is approximately 74" x 36".