This is an Indivi shirt. The color is navy blue, and the size is 15-32 (equivalent to a Large). This particular shirt has a round collar, so I think it can be worn both formally and casually. This shirt is made with great attention to detail in terms of materials and manufacturing methods, so if you are looking for a high-quality shirt, please consider it! It has also been featured at the vintage clothing store, Haru. ~Size~ Length: 70cm Width: 49cm Shoulder width: 40cm Sleeve length: 61cm Size: 15-32, equivalent to a Large *Please understand that there may be slight variations due to amateur measurements.