This is the room jacket (gown) only from the Shimamura x Hokaron Happy Bag, which is very popular every year and sells out immediately. (Purchased last month) It's very warm and made of a soft, fluffy material. Size: M Color: Navy Length: 114cm Width (underarm to underarm): 70cm (Please note that there may be slight variations due to amateur measurements.) Please purchase if you understand that it has been stored at home.