The pattern calls for 2 sets of US 5 circs, yarn needle, stitch markers and nbsp; A slightly smaller set of circs can be used instead for the second because you don’t do any actual knitting with it.

From the book, “Double-knit fabric has tow layers of fabric- and you knit both layers at the same time. This project teaches some new techniques amd stitches, and there’s a real thrill to seeing the double-knitted fabric grow.”