The Mueller Adjustable Posture Corrector helps to improve your overall health by improving your posture. Made from lightweight and breathable materials, this upper back support has a discrete and slim design that works under clothing or on top of clothing. Use the mueller adjustable posture corrector while at work, home or during workouts. It provides light support to the upper back while the elastic straps gives gentle reminders for better posture. The ideal combination of comfort and support, features more padding, easy one strap adjustment and vertically sewn seams on the straps to reduce discomfort under the arm.