A strait-jacket is a garment that is used to restrain individuals, particularly those who are mentally ill or prone to self-harm. However, there are many synonyms for this term, including straightjacket, constraint, trammel, restraint, or confinement. Other phrases that describe this type of garment include a straight coat, jacket, or vest. Most commonly, strait-jackets are associated with asylum patients or those who are perceived as dangerous. While they were previously used in mental hospitals and prisons, strait-jackets are now considered barbaric and inhumane. As a result, alternative methods of restraint are used today, which allows for better treatment of individuals in need of care.