Hello, I was wondering if when you buy t-shirts from places like cheapestees.com (site I got from this site! WOOHOO and thanks!) are they "t-shirts" or like the Hanes undershirts? Just curious! I bought a bunch of undershirt for tie-dyeing and they came out great, but for shirts that are going to have the iron-on transfers, I would prefer something a little "thicker". Thanks for your help, I don't want order online and then be stuck with them! CJ 17 days until my first trip this year!!