From the pattern:

What You Need

A round loom (or loom that can be used in the round, like the All In One or similar) that has a multiple of 15 pegs. Each section is 15 pegs. So a 60 peg would work, I used a 90 peg loom, the 90 peg small afghan loom from CinDwood

Stitch markers aren’t necessary, but they sure help.
A crochet hook for cast on and bind off.
About 250-300 yards of yarn. I used worsted weight, size 4.
A tapestry needle for weaving in ends.