This is a ribbed knit cut-and-sew top from MUJI. The shoulder design is unique, and while it's 100% cotton, it has some stretch. It's a slightly thick ribbed knit, so how about it for the coming season? [Material] 100% Cotton [Size] M Shoulder width: Approximately 34cm Body width: Approximately 31cm Length: Approximately 53cm Sleeve length: Approximately 56cm [Color] Navy (close to blue) [Season] Spring, Autumn, Winter Thank you.