Please kindly noted that this item is sold by third-party sellers from Joybuy marketplace. Description This item is made of premium material, which is durable and comfortable for long time use. The adjustable posture corrector is easy to put on and take off. It helps to improve and fix bad posture. Whether you have a hunchback or slumped shoulders, this corrector is going to retrain your body to have a good upright posture.  Features -Color: Black -Material: Sponge & Leather & PE & Plastic -Size S: Approx. 39 x 17 x 1 cm / 15.33 x 6.68 x 0.39 inch -Size M: Approx. 42 x 17 x 1 cm / 16.51 x 6.68 x 0.39 inch -Size L: Approx. 45 x 18 x 1 cm / 17.68 x 7.07 x 0.39 inch -Size XL: Approx. 48 x 18 x 1 cm / 18.86 x 7.07 x 0.39 inch  - This posture corrector provides alignment to regain proper posture, which helps avoid back, neck and shoulder pain caused by extensive sitting. - The product is resistant to dirt, adjustable and elastic for better correction. - Improve the hunchback, support the back, and adjust the pressure. - Gives you a healthy back position easily and quickly so you can look better and confident again. - It is a good gift for family and friends who have a trouble with body posture problem. This posture corrector provides alignment to regain proper posture, which helps avoid back, neck and shoulder pain caused by extensive sitting Hunchback Corrector, Humpback Correction Belt, Shoulder Support Belt, Upper Back Brace, Sitting Posture Corrector The product is resistant to dirt, adjustable and elastic for better correction Improve the hunchback, support the back, and adjust the pressure Gives you a healthy back position easily and quickly so you can look better and confident again ​It is a good gift for family and friends who have a trouble with body posture problem