1. Improve hunchback, support back, adjustable pressure
2. Shoulder traction, comfortable to wear inside
3. Adjust the sitting posture, adjust freely
4. Hook and loop fastener design, stick firmly
5. Soft and skin-friendly, light and breathable
6. Waterproof and durable, smooth surface, plastic adjustable buckle
7. Material: sponge+leather+webbing+plastic+hook and loop fastener+velvet cloth
8. Size: S, M, L
9. Weight: S: 63g, M: 73g, L: 89.5g