polyester, microfiber.Sizes: Please refer to our size information in the item description or left picture.Design: The suit vest is designed with classic solid color, V-neck Collar, 4 buttons and adjustable back buckle strap. Attention: Two pockets on each side can be cut into real pockets.Occasions: Business solid color suit vest set will be suitable for any formal or casual occasions, such as prom, wedding, date, work, party or for daily wear. You can match them with your shirt, suit or tuxedo, which will make you more noble and handsome.Washing Instructions: Dry clean or hand wash is preferred. Please note that the washing water temperature should be lower than 40.