This is a UNIQLO linen-blend shirt. I was suffering from a heat rash due to the polyester shirts from the uniform manufacturer, so I looked for a similar open-collar shirt and used this as a substitute. I am selling three of these shirts in total. The sizes are unknown, but I have included the actual flat measurements for your reference. 53% linen, 47% cotton Even with the same size, there may be variations in size and feel due to the linen blend material, depending on the frequency of use and the number of times it has been washed. Please be sure to check the details on each page before purchasing. Shoulder width: 45cm Sleeve length: 25cm Body width: 54cm Length: 73cm Please note that these are amateur measurements, so there may be some error. It has been dry cleaned. This was worn by a child. Please purchase only if you understand that it is home-stored and USED. Please refrain from purchasing if you are concerned about minor details. It will be compressed for packaging, so please be aware of any folding wrinkles. We look forward to your purchase if you understand.