This pattern and I did not get along. When I got all done, it would not go over his head (and he has an exceptionally small head for his size)! Now, I used a not very stretchy knit, but I think the real problem is that the collar used interfacing, of course. I did not have stretchy interfacing -- I think most is not stretchy. So the collar could not stretch at all. I realized it would be a problem when I got to the line in the instructions that said to stretch the collar when attaching it so that it would be a nice stretchy seam. I don't know why this pattern has worked for so many others but not for me.