It's a free size, but it runs small. It's about a size S to M. This item is new and unused, but it has been stored at home. Therefore, please refrain from purchasing if you are sensitive to such things or if you are looking for a perfect item. Also, to keep the price low, the packaging may be recycled. The item will be compressed or folded compactly for shipping, so please be aware of possible wrinkles. I am also selling this item on other platforms, so it may be removed suddenly.