Restore the Core Kit helps you zap that low belly sag. The pilates-based workout is safe and effective for moms and moms-to-be, and it can even be done with baby. Workout segments range from 9 - 30 minutes so no matter how busy you are, you can fit in a workout. For all ages and fitness levels. Workout is OB/GYN approved and follows ACOG guidelines for appropriate pre-natal exercise. Kit includes Restore the Core DVD, Fit 'n Fun mat, 2 high-density premium Fit 'n Fun balls, resistance flat band and air pump.