Is that like a Loincloth? Cuz, I like to dance around a fire in a loincloth on occasion. Is that safe, or am I going to be Darned to Heck?
It was a garment which was worn by the ordained priests in which they worked and conducted their duties. Since nakedness was an insult to the Jew I doubt that it was a loincloth. The Jewish Encyclopedia says there wasn't a more detailed description available.
The Hebrews considered nudity shameful, as illustrated by David's emissaries being humiliated by foreign powers who sent them back home with their beards shaven and their outer clothing cropped to show their buttocks (2 Sam. 10:4).