100% Cotton. Fabric: Reactive Dyed. Design: Plain. Neckline: Crew Neck. Back Style: Razor Back. Sleeve-Type: Sleeveless. AZO Free, Skin-Friendly. S: 36 in. M: 39 in. XL: 46 in. XXL: 50 in. | Spiral Direct Women's Plain Razor Back Vest Top in Black | Size: Medium