Straitjacket.

A straitjacket is e a jacket with overlong sleeves and is typically used to restrain a person who may otherwise cause harm to themselves or others. Once the arms are inserted into the straitjacket's sleeves, they are then crossed across the chest. The end of the sleeves are then tied to the back of the wearer, ensuring that the arms are kept close to the chest with as little movement as possible.The straitjacket is one of these treatments. Most jackets feature a crotch-strap to prevent the jacket from simply being pulled up and off. At the height of its use, it was considered more humane than traditional restraints made of ropes or chains.