Size:SMALL (Chest Circumference: 32-46 inches) Our Effective, Breathable, Adjustable and Comfortable Posture Corrector with Upper Back Support for men, women, adults and kids alleviate all types of back pains and provide shoulder support and improves poor body posture. Aside from better posture, it enhances breathing, body alignment and gets rid of back, shoulder, neck and upper back pain. Our clavicle brace is lightweight with durable and breathable high-quality neoprene. Wearing it is so effortless you won't even know it's there, as long as you use a correct posture, helping you stop from slouching or hunching while working. Why is Posture Corrector Important for Both Men and Women. Acts as a clavicle brace to provide clavicle posture support while working out, lifting, sitting at the computer desk, working in the office . Improves memory and learning and Makes you look taller, slimmer and attractive. Makes you look confident and powerful and improves bodily alignment. Eliminates back and neck pain and Improves breathing. Can be easily worn under shirt when at work and is completely invisible under your clothes. We've upgraded our thoracic pain corrector which prevents pinching and irritation and provides shoulder alignment. Our clavicle fracture brace made from lightweight breathable high-quality neopreneHow to continue to wear your back corrector, to get the natural posture, Simply, start by wearing it for 20-30 minutes, begin to progressively extend the amount of time spent wearing it by 5-10 minutes and increase to 1 hour a day. By this, it would make your posture perfect and would then only have to be worn occasionally.