Cca 100cm/40”long (from the neck down), 100-105cm/40 -42” wide (around hips).
I used cca 550g (100g = 600meters) of soft baby acrylic yarn.
Since the shape of the coat is meant to be loose, so t fits most sizes. You can vary the size of your coat by using different types of material and size of hooks.
I’m confident the written pattern is suitable for a dedicated beginner as well.
There are many pictures to help guide you through the crocheting, and supporting the written pattern for this coat/duster.