I regret every non wrinkle free shirt I buy. This one came out of the drier and directly onto a hanger. I didn't have much of a chance, the button side had beautiful crease to cover the buttons and the bottom side folded in the opposite direction revealing an awkward gap separated by the threads of the buttons.
I know I'm a guy and I suck at this so maybe I'm doing something wrong because the collar doesn't have a crease; if I unfold it there will be no line but there is a line along the buttons. I actually tried to iron the collar flat before so it could have crease to follow rather than sagging randomly but it doesn't hold the crease and instead it holds it along the buttons to expose my undershirt (or gut if I opt not to wear one).
