I've got the little 9 inch circular Hiya Hiyas, but this sleeve is bigger than that at the top (probably about 12 inches or so) and the yarn feels bulky (even though it's worsted) so I knew those wouldn't work. I didn't want to work the sleeves on double points and using the smallest cord on my Hiya Hiya interchangeables would be too big. I thought about it and tried to make excuses but finally decided to give Magic Loop a try - it never hurts to learn anything new (except maybe bull riding, I bet that hurts) and if I hated it, I'd figure something else out. So off to YouTube I went to figure out how to do it. It turns out Magic Loop is a little fiddly, Max chases and attacks the cords if he notices what I'm doing, but it's not so bad that I feel the need to track down and buy a 12 inch circular for sleeves (although it probably wouldn't hurt to have a few, right?) So I'm Magic Looping my sleeves. Go figure.