This is a Steven Alan bi-color polo collar knit. I purchased it a year ago and have worn it 2-3 times. The following is a quote: This short-sleeved polo collar knit features contrasting colors on the collar and placket. The design allows it to be worn as a single piece, and the smooth surface with minimal fluff and soft feel make it comfortable to wear. The silhouette is compact, not too large, with a moderate width, allowing for an elegant look. In addition to the basic black, we offer colors that will accent your outfit. This is a recommended piece for adult casual style. Color: Olive系 (Olive-based) Material: Cotton Season: Spring/Summer Stains, tears, odors, etc.: None