Features: Material: 85 Polyester 15 Spandex Adopting high quality breathable material, which is and comfortable for you to wear. It will pull back the shoulders, the neck and head are straightened while aligning the spine, and this will greatly improve your bad habits and good for your spine health. With elastic straps on shoulders and hook and loop on waist, this will be easy to wear and convenient to adjust size. Helps with some bad postures and prevents humpbacks and develop good posture. Specifications: Condition: 100 New Item Type: Back Support Belt Material: 85 Polyester 15 Spandex Colour Black Black with grey Quantity: 1 pc Function: Correct poor posture and prevent humpback S: Suit for waist circumference 53-65cm, Suit for height 120-140cm, Suit for weight 20-34KG M: Suit for waist circumference 62-74cm, Suit for height 130-160cm, Suit for weight 32.5-52.5KG L: Suit for waist circumference 72-85cm, Suit for height 152-172cm, Suit for weight 49-62.5KG XL: Suit for waist circumference 84-96cm, Suit for height 165-180cm, Suit for weight 57.5-70KG : Suit for waist circumference 95-108cm, Suit for height 176-190cm, Suit for weight 67.5-77.5KG 3XL: Suit for waist circumference 107-119cm, Suit for height 180-200cm, Suit for weight 72.5-90KG Package included: 1 x Back Corrector Notes: 1. Please allow 1-2CM differs due to manual measurement. 2. Real color may slightly different from pictures due to computer screen's resolution,brightness,contrast etc.Hope understanding.Have a nice shopping dayMaterial: 85 Polyester 15 Spandex. It will pull back the shoulders, the neck and head are straightened while aligning the spine, and this will greatly improve your bad habits and good for your spine health. Helps with some bad postures and prevents humpbacks and develop good posture. With elastic straps on shoulders and hook and loop on waist, this will be easy to wear and convenient to adjust size. Adopting high quality breathable material, which is and comfortable for you to wear.