Straitjackets, also spelled strait jackets, are restraining garments typically made of canvas, denim, or another heavy material, designed to restrain a person's arms and torso. Straitjackets have long sleeves that can be tied together behind the wearer's back, often with straps or buckles that secure the arms in a crossed position. The design of a straitjacket limits the wearer's movement and deters them from harming themselves or others.

Straitjackets are sometimes used for confinement, bondage, or sensory deprivation play. They can create a sense of helplessness, vulnerability, or control for the wearer, adding an element of restriction and submission to a scene. Straitjackets may be utilized to explore power dynamics, discipline, or role-playing scenarios within a consensual context.

When incorporating straitjackets into play, it is essential to prioritize safety, communication, and consent. Proper fitting, monitoring of circulation, and ensuring the wearer's comfort should be primary concerns. Open communication, negotiation of boundaries, and aftercare are crucial components to ensure a safe, consensual, and enjoyable experience when using straitjackets.