File:KTB-FemDom.svg

Most of the photographs on the Internet seem to be of the unhinged version, but the final perfected form of the device as sold by its original creators (the Femina Society) had a hinge. The lack of a hinge makes an already somewhat difficult to handle device even more unwieldy. Unlike many other chastity devices, a KTB is said to require its wearer to actively cooperate in suppressing erotic or arousing thoughts in order to be able to wear it pain-free.[1] If a KTB is properly sized and fitted, and the length of time it is worn is slowly increased to provide acclimatization at the beginning of its use, then the spikes should not pierce the skin (partly due to the "bed of nails" effect).