Only two girls have been locked in our Steel Armbinder before! It is very tiny, and you need a girl with slender upper arms and wrists! We found this new model Becky, and she just is amazingly flexible, with endless legs and long elegant arms! She was very eager to try all of our devices, so lets just start with the Custom Muzzle Posture Collar and Steel Armbinder. A chastity belt of course, because she would be a bit naked without one. Will she be able to get anywhere if we throw her the keys? Probably not, but we love to see her try!