100% Polyester. Business Modern Vest Design: Leisure simply style suit vest beautifully cut, excellent craftmanship, designed with 2 front pockets, 2 chest pocket, 4 button front closure, adjustable back strap offers you more accurate fit. Casual And Elegant Looking: Finished by excellent stitching, the stylish blazer featuring by minimalist design that allows you to stay relaxed and comfortable while adding elegant elements. Recommended Pairing: Men's suit dress vest waistcoat can easily match your shirt, suit, blazer, jacket which makes you more elegant and eye-catching in the crowd. Occasion: Men's casual business vests perfect for formal or casual occasions like business, office, meeting, workdays, wedding, graduation, date and casual daily wear. Warm Tips: Please read the size information of the product description in order to choose your own size.