The Alma vest is a made to measure and size inclusive pattern, this means you take your own measurements to begin with as described in the pattern and then follow the steps. This makes the pattern very customisable for any size and age.
You will need any type of cotton 8ply (DK weight) yarn and a 3.5mm crochet hook.
The pattern is for advanced beginners and is written in US terminology in English only. However there is a stitch graph, detailed steps and photos throughout to help guide you.