The pattern includes all sizes from Newborn to Adult. It has instructions for the girl and boy versions and the flower as well. Pattern is worked in heavy worsted weight yarn (size 4 medium), the UK equivalent of which is Aran. It includes pictures of every step to make it easy for even beginners. You need to know only the basic crochet stitches for this one and it works up really quick. It is written in standard American terms.

Gauge while working the round is explained in the pattern.