POSTURE CORRECTION BELT: Provides support for shoulders and back, helps correct hunchback and spinal curvature, maintains proper sitting, standing, walking posture. COMFORTABLE MATERIAL: Flexible soft fabric, light, comfortable, flexible. Wear without tension, protects spine, skin-friendly, comfortable orthopedic process. ERGONOMICS DESIGN: Helps develop straight back, strengthen shoulders, neck, back, creates good posture, alleviates pain in neck, shoulder, upper back, changes slouching habits. EASY TO WEAR: Like putting on backpack and support belt, easily put on and adjust, form fits upper and lower back, custom targeted support to relieve pain. INVISIBLE UNDER CLOTHES: Invisible under clothes, discreet for comfort. Wear at work, home, out, no one knows. Feature: 1. Straightens back, stretches shoulders, develops good habits. 2. Flexible soft fabric, reduces underarm oppression, comfortable. 3. Humanized design, elastic, won't curb body, skin-friendly, breathable. 4. Provides shoulder and back support, corrects hunchback and spinal curvature, maintains proper posture. 5. Adjustable tightness, adjust as needed. Specification: Item Type: Hunchback Correction Belt. Colors as shown. Optional Size: XS, S, M, L. Size Chart: XS: 22.5-37.5kg, 100-140cm/39.4-55.1in; S:37.5-45kg,140-160cm/55.1-63in; M:45-60kg,160-170cm/63-66.9in; L:60-80kg,160-180cm/63-70.9in. Package List:1 x Back Correction Belt