Wolkai explains how his Loin cloth works, even demonstraits sense he's so nice.

Basically the cloth is attached to the belt on the back, it goes between his legs and sucks into a loop on the front of the belt. Unless something pulls at it or it gets loose Wolkai won't show anything in high winds or fighting (Well. From the front at least, there's usually a little show on the sides)

Wolkai would go further into detail but he's already getting yelled at by Max and Mannez wants to go do something so another time.