This question already has an answer here:
I am sorry if this sounds repetitive but I asked the precursor of this question here What could be reasoning of male prison in VR world to only allow undershirt and sarong as nightwear to male prisoners
Now I just wanted to know how would a jailer get young male prisoners less than age 30 to adopt a sarong and undershirts as nightwear?
Please remember these young men belong to cultures where a sarong or its variants are already worn by the older men. But younger men for sake of fashion and image prefer lowers, bottoms or pajamas. The jail has kept sarong and undershirts as nightwear because it's cheap, it's humiliating as only elderly or poor wear it, etc. This question is more abt how the guy is talked to wear sarong