Hi! This pattern is MADE TO MEASURE, countable for any size, yarn weight and hook number. So here are just my recommendations about materials you may use but don’t have to.

Yarn suggestion:
Yarn weight 3 / DK weight
350 gr for XS - S sizes
400 gr for M - L sizes
450 gr for XL - XXL sizes
YarnArt Tweed 100 gr / 280 m, 30% wool, 65% acrylic, 5% viscose color 221

Recommended hook sizes:
Crochet hook: 5,0 mm
Tunisian crochet hook 5,5 mm
Some locking stitch markers
Measuring tape
Wool needle

Stitches you have to know:
Single crochet stitch (sc)
Slip stitch (ss)
Modified back loop half double crochet stitch (BLhdc)
Tunisian simple stitch (tss)

Have a pleasant crocheting!