The yarn calls for 8mm. The pattern calls for 9mm.
I started with the 9mm. I didn't like the result. I've pulled that out and started again with the 8mm.
See the picture below? That was knit with the 8mm. I tried to pull the sleeve around my wrist, and well, let's just say I've begun the sleeve again on the 9mm.
I like the tension on the 8mm. It is working for me.
The tension on the 9mm is not working for me. I'll take a picture of that today.