This is a Uniqlo semi-order stretch wool jacket. It's a slim fit. I believe it's one or two models prior to the current ones sold at Uniqlo. The original sleeve length was 56cm, and I had it altered by a tailor to about 58cm. However, the left sleeve feels slightly longer, perhaps by about 1cm. Depending on how it's measured, they sometimes appear the same length, and above all, I'm a novice at measuring, so I can't be certain. However, I think it's best to assume the left sleeve is about 1cm longer. Please consider this when purchasing. The extension fabric uses a different white fabric. There is a general feeling of use, with some loose threads and shine. I've checked as carefully as possible, but I'm a novice at inspection, so there may be oversights. Thank you for your understanding. Jacket Length: Approximately 69.5cm Width: Approximately 50cm Shoulder width: Approximately 41.5cm Sleeve length: Approximately 58cm Please understand that there may be slight variations due to amateur measurements. I will ship it compactly, so please understand that there may be wrinkles. This item has been stored at home, so thank you for your understanding.