Bangniweigou Men's 4 Buttons V Lapel Collar Slim Vest Bun-go is the sole authorized Seller of Bangniweigou(Serial No.86686145) products. Material:89%Cotton 11%Ploy 4buttons with two fake flat pockets;Adjustable Back Buckle Two colors available:Black/Grey; Machine washable Detailed size chart available on Product Description selection; SIZE NOTICE (Asian size ARE smaller than US or EU)