Equifit Shoulders Back Lite*Measurements are for chest* ShouldersBack Lite offers the same upper back support as ShouldersBack, in a sheer fabric for warm seasons and climates. Developed by a leading orthopedic team to help riders improve posture, ShouldersBack is also worn by professional athletes, dancers, chiropractors, dental hygienists, actors and models. With consistent use ShouldersBack helps retrain your mind and muscles to stay in a correct, upright position.