Silver-colored brass. Engraved logo details. No closure. MEN'S SIZING:,XS: Size 3 - inside measurements 64/49mm,S: Size 4 -inside measurements 67/52mm,M: Size 5 - inside measurements 70/55mm,L: Size6 - inside measurements 73/58mm,XL: Size 7 - inside measurements 75/61mm MM6 Maison Margiela Mm6 Logo Slim Cuff Bracelet