Seen at the 2011 Adult Entertainment Expo in Vegas, the Chastity Belt for Men—which cages in a penis by locking it to the scrotum—ranges from $70 to $159.95. Also available in camouflage for that "unassuming" look.
They've been a reality for years and years and are one of the most popular sex toys for men. It's one of the most popular male fetishes out there.
It's also way fun.
You can get a lot of information on it from this link:
Heck the Male Chastity Belt community even did a cheeky endorsement of Christine O'Donnell last year!