new design,AB zone,inversion table,home fitness The Ab Zone uses coil technology which turns a traditional crunch into the ultimate360 degrees abdominal and core workout. It targets your entire Ab area upperABS, lower ABS, oblique, lower back, hip flexors. It's as easy and comfortable toget in and out of as a chair, and replaces the crunches you use to do on the floor.It's contour backrest and ...