Twisted in design, Twisted in nature.  This solid metal chastity cage is a firm favourite over at Chastity Cages Co and it doesn't take long to see why.  Look to the special locking mechanism which literally screws into place, meaning there is not padlocks and an extra sensation of lockdown, coupled with a super restrictive size acting as a great punishment device or even every day device depending on the inclination of the key holder.