18 Gauge Steel Medieval Knight Muscle Armor Cuirass Jacket Halloween Gift Item. Made from : Fine quality Heavy 18 Gauge Steel. Adult Size & Wearable. Chest Size : 44″-48″ (Adjustable). Good Piece Of Collection. The holiday season is the busiest shopping period of the year, don? Our catalog covers every festival including Thanksgiving, Black Friday, Cyber Monday, Christmas. Please do visit our store and get yourself a treat.