He went into it in detail when he was interviewed by Guy Raz. Wilson defended himself by saying his comments had nothing to do with obesity, but rather material. He is a fabrics guy, and his clothes were being used to shape, a la Spanx, when they weren’t built to shape at all.

It’s a fascinating interview and one of the best in the “How I Built This” series.

I heard a tape of the original interview, too, and I was shocked that certain people with an agenda used it to ruin him. He very gently suggested that wearing them very tight and using the garments as a "spanx"-type girdle to shape wasn't how they're supposed to be worn. Plus-size activists hit the roof, for unknown reasons.

I second this, it was a fantastic interview. One of the things that stood out was how eloquent of a speaker that Chip Wilson is.