... adjustable strap in the back 4. nice design inside Men's gift waistcoat set, wedding vest 1.Composition: 100% silk ... or just according to your requirement2.Size: XS,S,M,L,XL,2XL,3XL,4XL,5XL,6XL or just according ... to customer's requirement.3. Interlining: 100% polyester or satin ... bow tie, necktie, cummerbund and so on. Men's gift waistcoat set, wedding vest