California Standard Abdominal Coaster/Crunch

It's the perfect addition to your home gym to give you the strong, toned abs you desire. Unlike traditional crunches, the Ab Coaster® works your abs from the “bottom up,” while limiting stress to your neck, back, and shoulders.
It can be an effective addition to a comprehensive fitness routine focused on core strength and toning. The AB Coaster is specifically designed to engage and strengthen the abdominal muscles, including the rectus abdominal (the "six-pack" muscles), obliques, and lower abs.