Similar to the Old Dubbo Gaol straitjacket: https://www.tumblr.com/louis-sj/760468176299573248/hands-in-front-straitjacket?source=share

Note the eyelet in the center & the two pockets for the arms/hands in front.

Note the mirror reflecting the back. The jacket would probably be more comfortable if laced like a shoe.

Wikipedia: https://en.wikipedia.org/wiki/Maitland_Gaol

MAITLAND GAOL CLOSED UNTIL FURTHER NOTICE

See: https://www.maitlandgaol.com.au/