This is a 100% cotton sweater from anatelier Pen & Hand. I purchased it several years ago and wore it a few times. It has been dry cleaned. Color: Navy系 (Navy-based) Material: Cotton Neck: Crew neck/U-neck Size: Shoulder width 40cm, Bust 41cm, Length 62cm It's a basket weave, so it has some stretch. It's not as thick as a wool sweater, so it's suitable for spring and autumn. I used to wear blouses or shirts underneath. The knit is slightly see-through, and you might be able to see the inner layer (please check the 8th photo). Also, there is some fraying near the wrist of the left arm, so please check the 9th and 10th photos. This is a used item, so please consider purchasing it if you understand this.