I thought in the US "Jersey" refers to t-shirts worn during American football or something like that? At least I have seen people saying "these are my Jerseys" and then pointing to their t-shirts worn during having played American football.
What I am saying is that I have seen the term "knitwear" everywhere, and when I am looking for "knitwear", I am not looking for t-shirts or "jerseys", but those sweatshirts that look like this (or the like): https://cdn.shopify.com/s/files/1/1181/5370/files/knits_1_48....
