Incorporate Gaiam Restore's Strong Core and Back Kit into your weekly workouts for a stronger, healthier back and firmer midsection. Its unique peanut-shaped ball is key to helping engage your core more efficiently with every exercise, and by making small adjustments to the ball's placement and pressure, you can control the difficulty of the workout. Stretch and strengthen your spine while increasing your range of motion. Two 10-Minute Workouts + Bonus Abs Workout (Packaging may vary to include DVD or Digital Download).