The Joy playsuit is written in English only using US terminology. The pattern is and advanced beginner level, however there are photos throughout to help guide you.
This is a made to measure and size inclusive pattern, this means you measure yourself before starting as advised in the pattern. This means it can be made for any size and age.
You will need any type of DK weight cotton yarn, or any other fibre will work too. I used roughly 1200m for the sample size (UK 8), you will also need a 3.5mm crochet hook and roughly 8-12 buttons depending on size.