Features: Take a weight off your shoulders. Realign your vertebrae to their proper position. Relieve upper and lower back pain, neck pain. Reduce slouching, hunching and slumping by corrector your posture. Recover mobility and strengthen the muscles. Reduce stre and bring more calm into your life. Look more confident and give people a good impreion. Specifications: Name: Back shoulder posture corrector Material: Cotton, Neoprene Color: Black Size: S/M/L/XL Suit for: Adult Men and Women Applicable Scene: Habitual camel back, high and low shoulder, shoulder joint pain, arthritis, acromion joint loosening, clavicle fracture, clavicle dislocation, scapular fracture and so on Size Chart: S: Chest size: 46 - 68 cm / 18 - 26 inch (Suit for weight: 20-40KG) M: Chest size: 68 - 91 cm / 27 - 36 inch (Suit for weight: 40-60KG) L: Chest size: 91 - 119 cm / 36 - 47 inch (Suit for weight: 60-90KG) XL: Chest size: 119 - 150 cm / 47 - 59 inch (Suit for weight: 90-110KG) Notes: Please allow 1-2cm measuring deviation due to manual measurement. How do I Pick the Right Size? Take a tape measurer (or string if you don't have one), and measure the circumference of your chest from right under the armpits going all the way around. How to continue to wear your back corrector for natural posture: Simply start by wearing it for 10 to 15 minutes at a time, then begin to progreively extend the amount of time spent wearing it by 5 to 10 minutes, increasing wear for up to 1 to 2 hours a day. If you have been experiencing significant back or other pain, we recommend that you check with your doctor for advice prior to using any posture corrector. Package included: 1 x Back Posture Corrector