Features: Change the forced to straighten design.Vibration reminder help you cultivate a habit to form a natural upright posture. Not oppression muscles,No stiff.Ergonomic 8-shaped design,comfortable to wear. Intelligent Posture Corrector Specification: product name: smart posture corrector color:grey size: free size(Adjustable ) Breathability Index: Breathable Elasticity Index: High Indications: Fix: scoliosis, stenosis, torticollis ,lower trapezius,Great product if you are on the computer a lot and need something to hold your posture. Correct poor/ bad posture,make you look younger. Comfortable corrector for your humpback issue,and this corrector is pretty flexible and easy to wear without any discomfort. How to wear: Straighten your back after wearing Adjust the strap to the appropriate length click the switch,and work normally after three shocksC It will vibrate to remind if the back is bent over 25 Package contains: 1 * Posture Corrector 1 * USB charging cable 1* User Manual