Long-sleeved T-shirt from Columbia. The size is S, but it was purchased in the US and is a larger fit, so it's probably equivalent to a Japanese M size. The color is a vibrant light blue. Although it is unused, please note that there are wrinkles due to storage. Also, there are hanger marks as shown in the 6th photo, but I think they won't be noticeable when worn. Thank you. Cotton Cotton