It's Asian size,please check the detail sizer on the size chart image.
<br />100% Brand New with tag.
<br />Brand: COOFANDY
<br />Material: Cotton Blend and Polyester
<br />4 Colors: Sky Blue, White, Dark Blue, Black
<br />Collar: Turn-down Neck
<br />Sleeve: Long Sleeve
<br />Style: Button Down Shirt
<br />Pattern: Solid
<br />Decoration: Button
<br />Cuff fastening: Double buttons
<br />Length Style: Waist Length
<br />Fit Style: Slim
<br />Opportunity: Casual
<br />Package Content: 1 x Men Shirt
<br />Note:
<br />1. Hint for choosing proper size, use similar clothing to compare with the size.
<br />2. Choose larger sizes if your size are same as the flat measurement Size chart.
<br />3. Please ignore the tag size comes with the clothes. The tag size sometimes can be a larger than our description size because those are for Chinese. We are 1 or 2 sizes smaller than European and American people.
<br />4. As different computers display colors differently, the color of the actual item may vary slightly from the above images, thanks for your understanding.
<br />5 Sizes available: S, M, L, XL, XXL
<br />Size: Asian size is about  2-size-smaller than US size, so make sure you have checked the following chart before purchasing: (please allow 1-2cm differs due to manual measurement, thanks)