You should never miss the Linko Posture Corrector if you are looking for a useful way to improve your posture and relieve back pain. Why Linko Shoulder Posture Corrector? - Improve the hunchback, bring perfect posture, make you more confident and attractive. - Relieve the pain on the back or shoulder or neck, get more relaxation when standing or sitting. - The back straight holder strengthens the back muscles, stretches shortened ligaments in the shoulder and neck. Features Size adjustable: the size of the shoulder brace can be adjusted within a range of 28 - 51 inches. Suitable for most people whether men or women. Invisible: the back support can be worn under your shirt and is lightweight and comfortable, which does not affect your action. So you can always keep your back upright whether you are working or meeting with friends. Note - The shoulder posture corrector can be washed by washing machine, but washing the strap by hand with cold or warm water is much better. - Please do not wear it for more than 1 hour. When you use it for the first time, it may be uncomfortable as your body is not used to the upright position and needs time to adjust. Therefore, we recommend that you take a break after you wear it for half an hour first, then you can increase the time to 1 or 2 hours as you get used to it.