Straitjacket

A straitjacket is a garment shaped like a jacket with overlong sleeves and is typically used to restrain a person who may otherwise cause harm to him/herself or others. Once the arms are inserted into the straitjacket's sleeves, they are then crossed across the chest. The ends 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.