Three versatile pieces of ZoN equipment for a great ab workout.The ZoN Deluxe Ab Kit offers a convenient and cost-effective way to develop abdominal muscle tone, and overall well-being for any fitness level. The ZoN Deluxe Ab Kit includes an ab assist neck strap, ab assist foot strap and an 8" soft, weighted ball. Use the ab assist neck strap to provide gentle support of the head and neck while performing crunches, sit-ups and other abdominal exercises. The ab assist foot strap is used by placing the door stop roller under a door or heavy piece of furniture, and placing the feet in the foot loops. Hold the soft, weighted ball to increase the difficulty level of your ab workout.