Comfy: With cushioned straps for extra comfort, and a waistband for further support. Posture aid: Get a back brace posture corrector, for under or over clothes! Work: Ideal for sitting at your desk, or any occasion where you need extra support. Designed to: Help train your muscles and spine to return to their natural alignment. Material: Made using breathable mesh fabric in black. Three sizes: M (70-90cm waist), L (80-100cm waist) or XL (90-110cm waist). | Back Brace Posture Corrector - Black - M | Wowcher