This is one of the topics we will discuss in class, but if you want to choose your material and cut strips for practice during class, I want to help you get ready!
The notes say that the pattern “…is suitable for medium to heavy weight stable knits like double knits, Ponte de Roma, scuba knit, medium-heavy weight Supplex.”
“Stable knit” is one of those terms that can scare you right off from choosing knits. Basically, it’s a knit fabric that has a little (not a lot) of stretch and a lot (not a little) recovery.
You want a fabric that has at least 25% stretch in the horizontal direction. To test this, fold a piece of your fabric along a top or bottom edge, line it up against a four-inch length of ruler or a gridded surface, and stretch it. It should easily stretch to 5 inches wide. If your fabric stretches a lot more than that, you may want to cut the next size down in the pattern.
In the vertical direction (along a selvedge edge), the fabric should stretch 25% or less.
Test recovery by poking your thumb or finger very firmly into the fabric near a selvedge edge. If, after a few minutes, you can still see where you poked the fabric, your fabric may not have enough recovery for this project.
I’m sewing my samples in Liverpool, which is a very easy-to-sew double knit fabric. (This is the exact fabric. Please note that we are not affiliated with Girl Charlee.) Another good option is Heavy Brushed Athletic Performance fabric from Greenstyle. (We are connected to Greenstyle, but this is not an affiliate link.)
I also love the idea of making this jacket as my first scuba knit project. This one is so great!
Don’t forget that, whatever fabric you choose, you’ll probably want a lighter-weight fabric for your pockets. I’m using nylon tricot for mine. An athletic mesh would also be nice and very RTW.
For more background on sewing knit fabrics, check out this Threads Magazine article by Ann Person, a piece on Ponte Knits by Nancy Nix-Rice (subscription and login required), and Sourcing Scuba Knit by Stephani L. Miller.