Don't let your workouts get dull and repetitive. By adding new exercises and changing your routine, you are more likely to stay motivated to continue. Try adding the 20 Pound Rhino Elite Medicine Ball to your routine. The textured surface will give you a superior grip. With such a good grip, handling the ball for your exercises is simple. This medicine ball has a consistent bounce due to its' hollow synthetic rubber construction. The 20 Pound Rhino Elite Medicine Ball is black and blue and has an 11” diameter. Medicine balls are a great addition to any workout as they are the perfect tools to strengthen and tone your core muscles.