What yarn did you use to make kitty hat?

Hello all ! I’m almost done with my other Jack Skellington doll and when I do it is time to start on my best bud’s X-mas gift. I have been thinking about what to make her for about a week and I have decided to make the kitty hat out of the SNB book… or at least atempt it lol.

My questions out there for those that have done it are:

What kind of yarn did you use?

What size needles did you use ?

The pattern calls for 3 skeins of Mission Falls Wool ( 100% superwash merino wool).

Now I don’t think I can find that yarn locally and I want to know what I can substitute it with. What did you use ?

Thanks for the help!