A classic vinyl butt-plug I bought in a sex-shop in 1995 . Nothing special but very effective and comfortable to use. Can be worn for as many hours as you want during a self-bondage session or just under your normal clothes to the office, marriage or a dentist visit. A crotch rope is recommended to keep the plug in place.
A rubber version of this butt-plug can be bought here (in the middle).
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