The Tone Fitness abdominal toning wheel is an easy to use exercise equipment that can help to add strength to your core and tighten the abdominal muscles. At the gym or in your own home, you can use the wheel to help work out your lower and upper back, hips, chest, arms, butt and legs. These wheels are portable and easy to store just about anywhere. Non-slip wheels provide stability. The contoured grip handles allows for a smooth and comfortable workout. Warning: This product contains one or more phthalate chemicals known to the state of California to cause birth defects and other reproductive harm. Consumer may return the product for a full refund, including shipping cost for both receipt and return of the product within 15 days of his or her receipt.