This is an L.L.Bean knit. It's a cotton knit, but it's thick and warm to wear. It's also easier to care for than wool, and you can wash it at home. It's a size S, but it's a US size, so consider it about a Japanese M size. 《Size S》 Shoulder width: Approximately 47 cm Body width: Approximately 52 cm Length: Approximately 53 cm Sleeve length: Approximately 62 cm Color: Blue系 (Blue-based)