A strap-on vibrator is a vibrator that you can strap on and wear in combination with a harness. Unlike a normal strap-on, also called a strap-on dildo, these toys are intended to be worn by the man. The strap-on vibrators from this category are hollow so that the man can slide them around his penis. The harness is attached with adjustable straps around the man's waist and thus keeps the toy in place. The strap-ons from this category also have the option to vibrate . The man can thus give his partner extra stimulation.