The Aeromat Pilates Ring is black, 14" diameter with large, foam-padded grips for extra comfort spring steel ring structure includes instruction sheet. This Pilates Ring introduces abdominal and leg exercises focusing on balance, flexibility, strength and posture, resulting in increased stamina, energy and mobility. You will shape, firm and develop the strength you desire. This product was engineered to combine durability, flexibility and comfort, allowing you to get the most of out of your workout.