I ironed this cardigan when I finished it to give it that airy and thinner type of feel. It makes the yarn flatter and more stretched out than blocking made it and the details are included in the pattern. The measurements for the sizes are AFTER ironing.

The crochet hook you will use will be a 6.5mm afghan hook.

This cardigan is worked using the Tunisian Crochet stitch and I include a picture tutorial on how to do this stitch.