US Jaclean INC.- Core Twist Balance Board Ankle Body Cardio Fitness Workout Exercise Non-Slip. Twist your way to health and happiness! Tone core muscles and trim your waistline. This mini fitness twist disc comes with reflexology nodules to massage your feet and magnets to encourage blood flow. At only 10" in diameter its compact size allows easy carrying and storage. Figure Trimmer- Plastic Engage your core muscles with this 10" mini twist disc with reflexology nodes. A fun aerobic exercise that lets you twist your way to a tighter waist. Regular use tones, improves balance and increases stability. Helps reduce...