A suicide smock, also known as an anti-suicide smock, turtle suit, or suicide gown, is a tear-resistant single-piece outer garment designed to prevent a hospitalized, incarcerated, or otherwise detained individual from using the garment to commit suicide, particularly by hanging. It is made of sturdy quilted fabric that is thick and stiff, making it impossible to roll, fold, or tear into strips for use as a noose or ligature. The smock is collarless and sleeveless, with adjustable openings fastened by hook-and-loop closures, and it covers all private areas as the wearer is usually naked underneath for safety. The smock is not a restraint, allowing mobility while preventing self- harm, and provides warmth and modesty. It is commonly used in hospitals, jails, prisons, and mental health facilities for individuals on suicide watch or at risk of self-harm. The product was designed by nurse Lonna Speer in 1989 and is now a standard safety item in many correctional and healthcare settings.