The Best Fitness Hyperextension Ab Board is great for doing core workouts. This bench will help you achieve a flatter stomach, better defined abs, well developed obliques, improve breathing, reduce or eliminate your lower back pain and help give you a straighter, more upright posture. The ab board provides 3 starting positions which are at a 15, 20 and 25 degrees. The safety pin, will enable you control the bench to either increase or decrease the intensity of each session. The ab board can be adjusted for different size users. It provides a 6 position hyperextension support and 3 position lower leg support giving the user a wide range of variable workouts. This bench is durable, versatile and affordable.