Very similiar in looks to the USA prison shirts in jail house rock/cool hand luke.
Made from thick denim with either plastic or metal buttons, button down epaulettes, button down chest pockets and cuffs. They also feature a drawchord on the inside to taper in the back and metal hooks, one on either side of the waist to rest a belt.
Thick enough to wear as a jacket or a winter shirt, very rugged and durable.
Alternatively match with the swedish denim trouser for the above mentioned southern states chain gang look as fancy dress and then have two useful garments for eveyday use in your wardrobe.