There are several threads on this and if you search you will see lots of opinions. I have had some BB non-iron shirts in the past and I don't think they shrank much if any. You would not need to order a different sleeve length than normal. Thanks. My forum searches only turned up answers about BB non-iron shirts, but I didn't think to try brand-specific searches. I'll give that a shot tonight. As far as these shirts go, they were fine, but I ended up returning them because I did not like the feel of the non-iron fabric, so maybe I am not the best judge. Yeah, the non-iron BB has the stiffest fabric of the four. Hopefully that'll soften up after several washes. On the other hand, I've read lots of comments about how BB's non-iron shirts stay wrinkle resistant far longer than others. Maybe the early stiffness is the trade-off? One of the things I hope to find out. I say, learn to iron and be more comfortable! I care more about convenience than comfort. I'm lazy like that. I aim to try at least one good must-iron all-cotton shirt at some point, however, just to see if it changes my mind. I may yet see the light.