This abdomen wheel is made of engineering plastics for durable use. It can help you work your entire core, strengthening your stomach, back and sides. It is a good choice as a gift for those people who loves fitness, because this abdomen wheel is effective. Features - Color: Black. - Material: Plastics. - Size: 30 x 22 x 12.5 cm. - This abdomen wheel is made of engineering plastics. It is durable in use and its shape would not be changed easily. - The three wheels roller is perfect for the effective training of the abdominal muscles. - The handle pattern design can prevent hand from sweating and unable to hold the abdominal wheel. - This abdomen wheel will help you work your entire core, strengthening your stomach, back and sides. - This product not only can work out your abdomen, but also can promote fat burning during endurance training to support your weight loss.