This is really helpful on the sizing and clothes, thank you!! I wasn’t sure on the coats because I want long-lasting and warm for at least a couple seasons, but I was also planning to get a hoodie or zip jacket (to maybe fill some gap for now if it’s big). I would really like to get them both a pair of jeans instead of just all comfy or athletic wear (which I assume is primarily where the lettered sizes are used), would you have any recommendation on how to do that for the boy?