Support Shoulder Back Brace Posture Correctionr Spine Corrector Health Stop Hunching Back Trainer Unisex Postural Fixer Tape Brand: Mumian Model: G09 Colour: Black Material: 65% synthetic rubber, 30% polyester, 5% nylon size: M: suitable for waist circumference 66-78.5cm (26-31''), height 125-167.5cm (4.11-5.5'); L: suitable for waist circumference 76-91.5cm (30-36''), height 164.5-186cm (5.4-6.1'); XL: suitable for waist circumference 91.5-109cm (36-43''), height 176.5-195cm (5.8-6.4'); Application: Orthopedic body can improve the status of hunchback. Features: 1.The effect of correcting the hunchback only by improving the upper back is not very good. Our back brace not only support your upper back but also help provide the proper posture for your lower back. Only correct the upper back to the lower lumbar area simultaneously can train your muscles and spine to return to their natural alignment. 2. Posture Corrector is a great way to stretch muscles and take some preure off, therefore use the back support brace regularly can repair your muscles strain and damaged spine effectively. It also provides lasting relief from several conditions such as herniated disc, sciatica, scoliosis and degenerative disc disease. 3.We adopt Comfortable Buffered neoprene material of shoulder velcro straps instead of nylon straps, so dont worry about armpit will getting chafed. The armpit pads are not including because you may feel uncomfortable and bulky. The back brace made of lightweight & breathable Neoprene material to help keep your back from getting heated and sweaty. 4.There are four steel plates on the back brace to help you better straighten back and stop slouching. We suggest wearing your new posture support for 20-30 minutes at a time for the first week of use. Then increase that time by 10 minutes each week until you are completely comfortable wearing your posture support. Correcting years of bad posture takes time and may be uncomfortable at first.