Adjustable Abdominal Crunch Sit Up BenchEnjoy the comfort, full support and versatility of the amazing Ab Crunch Sit up Bench right in your own home! This must have fitness enhancement features a fully adjustable, longer than average and wider than average plank. This generous plank allows you to adjust the incline of your bench for greater resistance and to reach your target muscles. For beginners and veteran workout enthusiasts, this resistance level can be adjusted as fitness levels