Bindings
This "advance in technology" was part of the larger process of the Marking and the removal of the "impure" and "beastly" magic users who use powers other than those sanctioned by the state. It was aimed at preventing the transformations of several types of Shape Shifters who do not follow the path of the government approved shifting species.
Utility
There is no good reason for them to exist as they are purely torturous in their design. Even in human form the cuffs dig into the flesh so when the transformation happens, which it inevitably does, they tear deep into the muscle and create deep scars which cannot be healed.
Manufacturing
Their creation is a simple process, iron cuffs usually used for retraining prisoners are lined with different metals (usually but not always, silver) to prevent the transformations.
The outer iron is them covered with magic markings to reenforce it when the "beast" finally emerges.
Social Impact
This invention has soothed the minds of those who feel that these people are a threat to "normal" society because of their "impurity" as it can be used to restrain them.
For those the Government classifies as "beasts" or "impure" this invention showed the creation of yet another weapon to be used against them.
It is commonly used in Government facilities to restrain and control the "impure" creatures and it is known about in these circles as the greatest form of torture for these people.
They are painfully simple, metal cuffs (material differs depending on the species that is being restrained) are fastened tightly to the wrists and ankles of the victim. These cuffs are marked with spells to reenforce the metal against great force.
Experiments were done for a long time to try and restrain the "unnatural" human-like creatures who are seen as a threat the the purity of magic using bloodlines.
Hello, people out there in internet-land. I hope you enjoy reading my brain thoughts, apologies for any spelling mistakes made I really can't spell very well and I am trying my best to find them all. If you find any I've missed please let me know. Thanks :)
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