I buy dri fit polo golf shirts (really this is just 100% polyester shirts fyi) from Kohls or something on clearance. Then I buy some byu stretch Y patches from the byu bookstore and have my wife or mother in law sew it on for me. You can also get the ones that iron on, but after about 5 washes it starts to come off. If you go that route I'd hand wash and hang up dry only.

This is how you get a 20$ BYU polo shirt and not one from nike for 60$.

That's how winning is done.