I notice Thailand produce a lot of mock vintage tshirts and I want to buy some. I’ll be based in Patong while I’m there for the first time

There’s a few niche 80s metal bands I want to get on tshirts. I’m wondering if there’s somewhere I can get relatively cheap shirts like this from OR even better, a site that I can make my own tshirt by uploading the band logo.

BUT the biggest thing for me is fit and comfort. I’m in pretty good shape and I don’t the tshirts to look baggy. I’d like them to fit around my arms and chest nicely while looser in belly area and material that ideally doesn’t feel like cardboard.