Ab doer twist is made in way to eliminates stress to hands, wrists, elbows, shoulders, neck and upper back
Enriched with multiple resistance rods allows you to craft challenging core workout
Swivel action seat, which increases fat burning and muscle toning benefits to your entire abdominal region with target emphasis to all sides of your legs, hamstrings, hips, buttocks and oblique
Massage roller, which gives you revitalizing therapeutic massage every time you exercise
