This courier service primarily uses STO for most areas nationwide. If it doesn't reach your area, we can send it via postal small parcel. If you need it, please contact customer service; leaving a message is not effective Default is STO, if you need to use other couriers, please contact customer service, leaving a message is invalid Before placing an order, please check if the delivery area can receive it. If the courier cannot deliver and you cannot receive the shoes, any issues that arise will be your responsibility!!! Please ensure the packaging is intact when returning or exchanging goods to avoid affecting secondary sales; otherwise, returns or exchanges will not be accepted Friendly Reminder: This shoe size is standard; the way to ensure your child wears the right shoes is to measure their foot length Recommended reference: Inner shoe length net foot length + 1cm If you're unsure about which size to wear, you can consult customer service