When shipping, the item will be sent without the box to keep it within 3cm. Includes instructions. Product Description: Tightens securely with a simple pull of the cord. Corrects posture comfortably and immediately resolves lower back pain. Adjustable with one-touch ease using a block and tackle system. Improves posture, strengthens core through abdominal breathing, and prevents lower back pain. This belt allows you to feel that "your body is happy with this pelvic belt." Also suitable for pressure training and drawing-in dieting. Can be washed in a laundry net.