Features: Simple and comfortable design,Velcro can freely adjust the tightness.The product can make the shoulders back, chest have direct effect,Two shoulder design to help straighten back lines, graceful and charming.Long term use helps to adjust the body curve.it can be a perfect gift for your wife or girl friend.Material: PolyesterCleaning method: hand washing.Usage:1. Adjust your back to fit your shoulder width2. It can be worn directlySize: suitable for shoulder width about 35 ~ 45cmPackage :1 x Back correctorNotices: 1. Please adjust the belt as your size before wearing.2. The product is not a medical device, can not be used for disease treatment.3. Due to the back of the sticky design, sweater is not suitable for wear.4. If appear discomfort (skin itching discomfort), please stop using.5. Skin eczema, the injured do not use.6. When you go to sleep, please remove it.