These Suction Handcuffs from the Sex in the Shower^TM line feature industrial strength suction cups with neoprene and velcro cuffs. Just affix them to the your shower tiles or bathtub-they won't budge! But the bathroom isn't the only place this sturdy set will bring a little extra kink-they also work on any smooth surface including windows, glass doors, car window, and kitchen counters. The only limitation is your imagination!