The Straitjacket Escape is the act of getting out from a fully laced straitjacket without external assistance. The concept of presenting such an escape as a form of entertainment was created by Houdini in 1896. His brother Hardeen also performed it.
Houdini started doing the escape from behind a curtain, so the audience did not see the actual method by which he escaped, but he decided later that he got a better reaction when doing it in full view of the audience.
Houdini performed his first "Suspended Straitjacket Escape", hanging forty-five feet off the ground from Minneapolis Eventing Tribune office building, on September 29, 1915.