Corrected entry: When Percy and Wild Bill are both being placed into the strait-jacket, the jacket has buckles. Strait-jackets back in the 1930's had to be laced up through eyelets. Buckled strait-jackets didn't appear until the 1980's.
Greg Dwyer
7th Apr 2018
Correction: That's incorrect. Look online and you can find plenty of antique straight jackets with straps and buckles.
Greg Dwyer