Sluggos

He had no luck with the sluggos, something he said he suffered when he wore them, but neither of us knew what he was talking about.

Source: wiktionary

Their times came down and down until, on about the tenth change of dress, they went from sluggos to wetsuits in one minute forty-three.

Source: wiktionary

I was paddling out, and this guy said, What are you doing in those sluggos?

Source: wiktionary