This is a cornerstone open-collar shirt. The fabric feels like a blend of polyester, similar to Jil Sander. However, it's soft and very elegant. The silhouette is excellent. This item is not widely available, so I think it's rare! I'm selling it because I don't wear white shirts as often anymore. Length: Approximately 63cm Shoulder width: Approximately 50cm Width: Approximately 51cm I look forward to your purchase.