Sizing is always a challenge and something we try to overcome by providing a sizing guide, with an explanation about the swim parka not being a conventional garment. That being said it is difficult to know what size will be best without being able to try on the garment.
Therefore our customer exchange policy is very accommodating and we are more than willing to send you an alternative size (as no customisation was done on the parka). Please advise on the alternative size you would like?
Thank you for the suggestion about having a more tailored parka for the girls. Something I would definitely like to design in the future. There is an American brand called Wotter that have capitalised on that niche. Check it out at https://wottergear.com/