Their advantage is that they can be simply left in for anal stimulation during solo or partners' sex to receive multiple enhancements.
P-spot vibrators are made in such a shape with curved heads that these facilitate the stimulation of the prostate.
[1] Anal vibrator shapes can vary depending on the brand and buyer's preference.
[3] They can usually generate different types of vibration, and in products marketed primarily for prostate stimulation, the internal motors may be individually controlled or the shape may be articulated.
[4][5] Materials vary by brand, but among the most commonly used is silicon to facilitate disinfection (using sodium hypochlorite, alcohol).