It's Asian size、please check the detail sizer on the size chart image.<br />Material: Cotton Blend and Polyester<br />4 Colors: White、 Red、 Gray、 Black<br />Collar: V Neck<br />Sleeve: Sleeveless<br />Style: Button Vest<br />Pattern: Solid<br />Pocket: No<br />Decoration: Back Belt<br />Length Style: Waist Length<br />Fit Style: Slim<br />Opportunity: Casual、 Office<br />Package Content: 1 x Men Vest<br />4 Sizes available: 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)<br />