Enjoy the exciting vibrating sensation of the 3 Bumps for Your Rump plug Each smooth, flexible plug features three graduated bumps to ensure that you get the perfect--and most satisfying--fit. Enhance your stimulation by adjusting the dial at the base of the plug to find the right vibration setting to send you over the edge Measurements: 9.25 inches insertable length with each bump approx. 5.88 inches, 7.13 inches, and 7.88 inches in circumference at widest point, from smaller to larger bump. Material: PVC Color: Black