Women's Cotton woven Summer Sleeveless Strap Midi Dresses with Pockets based on the size tag because this is new with tags but it is in Chinese this is size F which is one size fits most which is will fit extra small small and medium Based on the information provided, the dress size is F. This is also known as "Free Size" or "One Size Fits All".  However, it's important to understand what "Free Size" typically means: It's designed to fit a range of body sizes, often from Extra-Small to Medium (XS, S, M). It may also fit a Large size depending on the specific design and whether the garment is loose or stretchy. It's usually not suitable for sizes XL and above. It's important to note that no garment truly fits everyone, and the fit can vary depending on your individual measurements.  To determine if this specific "Free Size" dress will fit you well, you should ideally: Refer to any specific size chart provided with the product information if available. Check the product description for details on the design and intended fit (e.g., loose, stretchy). Compare your body measurements to any provided garment measurements.  Essentially, "Free Size" indicates the dress is a one-size-fits-most, but it's not a guarantee of a perfect fit for every body type.