Gently widening the anal opening upon insertion, the Massager's slick oval tip very gradually increases in thickness for a purely pleasurable stretch that won't shock sensitive muscles as it angles naturally toward the prostate gland. More than enough length allows for customized depth control, so from shallow teasing to deeper, filling penetration, minute maneuvers and a slow or quick insertion process is entirely possible. Once in place, toe-curling vibration starts up instantly with a twist of the rounded base, the multiple speeds range from teasingly tickly to a deeper intense buzz.