Pro Massaging Hoop Exerciser With Magnet Type: Massaging Hoop Size: Dimensions: 38.5 x 38.5 x 1.5 Feature: This exerciser is composed of a Hula-hoop with the addition of acu-pressure balls on the inner ring of the Hoop. The acu-pressure balls of the hoop have a therapeutic effect when you use it, helping you get in shape, strengthen your abdomen and lower back while improving your blood circulation. The exerciser provides a fast, fun and slimming workout. Get a great workout and massage in the comfort of your own home with this great product!