X-Booster L size, designed with 3D technology for posture correction and muscle support. Color is black. - Brand: X Booster - Model Name: X-Booster - Size: L - Patent: Patented - Features: 3D design support - Functions: Posture correction, muscle support - Material: Stretchy material Thank you for viewing. Size: L I am selling this because the size did not fit me. Thank you. adidas, NIKE, Puma, New Balance