I bought this for my child to wear to school, but they didn't use it because they get hot easily. It has been stored in the closet and has no pilling. Made with yak wool, which has high heat retention. Material: 50% Yak Wool, 50% Wool Length: 62cm Width: 46cm Sleeve Length: 88cm Color: Black系 (Black-based) Season: Autumn/Winter Stains, tears, odors, etc.: None #SchoolSweater