Designed for fans of hands-free play, the unique curved base of the Silicone Noir Rockers feature embedded 2mm inputs that allow you to sit on, rock and grind against the e-stim butt plug during wear. The Silicone Noir Rocker Butt Plug - Medium sits in the middle of this range and is ideal for anyone experienced in anal play that's graduating from one of our smaller designs. Created from 100% platinum-cured black silicone, the tapered shape assists insertion and the subtle ridged texture enhances sensation during wear. Seamless bi-polar contacts in the shaft transmit sensation from an ElectraStim stimulator (sold separately) making your anal pleasure zones tingle and the muscles pleasurably throb in time with the stimulation pattern.