Sweater Vests

I was watching Freaks and Geeks years ago and a friend found it especially amusing that Samm Levine's character was wearing a sweater vest that had a rounded neck instead of a v-neck...and it made me remember that said item was a wardrobe staple of seemingly every other male teacher that I had in middle school. I then scoured a bunch of thrift stores in search of one of these, but I couldn't find one.

I can't even find any pictures of his character wearing one of these things. These exist, right? How do I get one?

I used to have a bunch of these that I could have given you.... I think they were from H&M, J. Crew, etc. You could try the boys department of Brooks Brothers, maybe? But you might have to wait until the fall. Also, maybe a school uniform shop? :)