Perfect Fit Brand Strap On Butt Plug Small is shaped for under attire plugging. Master Plug and its a unique body countered butt plug that has features to allow it to be used with a strap from a thong or jock or Fetish clothing. Though it works great without a strap. It is most unique feature is the 2 part molding process, that allows us to use a strong thin inner core and over mold a softer Thermoplastic Rubber TPR plug with a very thin neck, making it extremely comfortable, flexible and strong. Truly a unique item it is designed for discreet under clothing fun. Small plug with a 4.8 inches circumference. Can be used with .50 inch and .75 inch straps.