Features: 1. Soft and breathable, widened and enlarged. 2. Breathable and moisture-wicking to maintain a comfortable effect 3. The webbing can be adjusted in length from 45 to 90 cm 18 inches to 36 inches to accommodate travelers of different heights Specifications: Unisex, suitable for children M size fits all applicable chest 25-42 inches XL plus size chest 37-48 inches, Weight: 0.08KG each Color: Black Washing: 1. Use normal warm water 2. Do not rub hard 3. No need to machine wash 4. Should not be exposed Packing List: 2 Back Braces Our back braces are easily adjusted for a perfect customized fit, and their cushioned "soft feel" spine makes them comfortable for daily use.[ GOOD CUSTOMER AFTER-SALES EXPERIENCE ] - Each of our posture corrector has undergone strict factory inspection. You don't need to worry about quality problems, because we believe you deserve the best. If you have any questions during use, please feel free to contact us. Our customer service team will provide you with satisfactory service at any time. [ CUSTOMER FIRST TRADITION ]- High quality after-sales service Each of our posture corrector has been rigorously tested and made with love, because we believe that you deserve the best. If you have any questions about this posture corrector, please feel free to contact us, our high-quality customer service will let you get satisfactory service. Including free returns, exchanges or refunds, etc. [ INVISIBLE UNDER CLOTHES ] - The shoulder brace is so easy to wear, by magic tape and the elastic and soft sponge pad shoulder strap, you can adjust it yourself to achieve the ideal fit. And this posture corrector Invisible under clothes. You can wear it when you are out for work, exercise, yoga or leisure! posture corrector is different from other traditional back brace. It allows you to move completely freely without hindering your daily life. This is one of the best posture corrector!. [ SAY GOODBYE TO BAD POSTURE EMBRACE HEALTHY LIFE ] - posture corrector aims to solve or prevent bad posture, with comfortable and strong back and shoulder support, this back brace relieves back, shoulder, neck and collarbone pain, restores the correct memory of the muscles, and makes it easier to work or stand for long periods of time. Besides, it can also prevent bad postures caused by laziness, protect your overall spine health. [ RECOMMENDATIONS FOR THE USE OF BRACE ] - We recommend starting 15 to 30 minutes a day. When you feel comfortable, gradually increase in 15 minutes increments and then gradually wear it for 2 hours. Tighten the straps periodically to pull the shoulders furtherback until shoulders lay flat when against the wall. In time, with muscle memory, your body will hold the correct posture without the corrector. Wear it when you feel yourself beginning to slouch.