Amazon.com: Brace Posture Corrector, Yoga Training Stick for Posture Adjustable Hump Correction Upper Back Posture Corrector Support for Prevent Humpback, Relieve Back Pain Back corrector, Posture corrector Smart Posture Corrector Miicro Vibration Posture Training Reminder. This women posture corrector is made of 55% nylon and 45% spandex fiber. Breathable and high elastic. The wide shoulder straps can improve supernumerary breast and gather chest, giving your bra an extra uplift. The criss cross design of chest brace up targets the upper back to help support aligning by gently pulling the shoulders back to offer therapeutic relief. Adjustable buckles for better fit your body. Provide support for your breast for shaping more sexy chest. Perfect to be worn underneath your clothes to give your bra an extra uplift. The personal posture corrector brings your shoulders back into the right position and improve for a better posture. Decrease your shoulder and waist pain caused by seating for a long time. Correct your posture and shape a nice looking figure. Suitable for workers, teenagers, housewife and other people who have bad seating walking habits. Size Chart(cm) Size M L XL Underburst 70 75 75 80 80 85 Bra size 32 34 34 36 36 38 Weight(kg) 45 52. 5 52. 5 60 60 67. 5