This is a Ralph Lauren shirt, a domestic Japanese product. I only tried it on once after purchasing it. I bought it on Mercari. It's in beautiful condition with no noticeable stains. There are no stains that suggest it has been worn. ■ POLO RALPH LAUREN Below are the size details from when I purchased it: ↓↓ ■ Size XS, equivalent to L Length: 73cm Shoulder width: 42cm Width: 52cm Sleeve length: 62cm ★ Although it's labeled XS, it's a large size, equivalent to L. I have kept it stored since I bought it. Thank you for your understanding.