Recommended by doctors and physical therapists, the Posture Medic® helps you achieve better posture easily and effectively. Using it with the easy 10-minute stretch and strengthen program will help improve your posture, increase your range of motion and improve your upper body strength. Then, by wearing it as a dynamic brace, you will retrain your body to maintain proper posture. You'll feel the difference in just one use. Latex and nylon. Available in: Small (4'8"-5'5"), Medium (5'4"-5'7"), Large (5'6"-5'11") or X-Large (5'11"+). Each size comes in a different color.