Outer fabric: 79% polyester, 21% viscose; Lining: 100% polyester. Button closure. FINEST MATERIALS AND METICULOUS CRAFTSMANSHIP -- understand that exclusive materials and meticulous craftsmanship are the two most important things for a tuxedo. That's why we have the most experienced tailors who hand-sew these tuxedos with the finest fabric and material. From top to bottom, you will find that these suits are of exactly the same quality as our photos. MODERN STYLE AND SLIM FIT -- This tuxedo/suit set features a slim-fit cut with 3D draping. Slim-fit suits are a bit tighter than regular suits. They make you look slimmer and smarter. And thanks to our careful size recommendation, you will find that it is not only slim but also comfortable. You will receive lots of compliments all day long! MULTIFUNCTIONAL -- This tuxedo/suit set is suitable for multiple occasions, such as weddings, business meetings, fashion shows, parties, major holidays, or just regular use.