shipping posters in USPS priority envelope

hi!! i’m looking to seeq if anyone can help me out with some answers.

i’m selling small paper size posters and i don’t have anything to ship them in, and I was wondering If i can use the USPS priority mail Tyvek envelopes to ship them, but the app that i’m using to sell them on generates a USPS ground advantage label for me to use. would i be allowed to use the priority mail envelopes with these labels?