It means that there is only one size available for the item, generally a medium size to fit the majority of customers. However, please note that a Medium in China is approximately a Small in Europe/USA.
There are some complex rules and filters in every mail system so sometimes our e-mail will be treated as spam which is then redirected to your spam box.
The item is only reserved once your purchase is completed in the checkout. If an item is very popular, it might be available when you place it in your shopping bag, but sold out once you reach the checkout. An item added to your shopping bag is saved for 7 days, but availabilit…