Muslin cotton filled hanten is very smooth to the touch, very light and warm, so popular Japanese muslin hanten Filling: 95% cotton, thin but very warm. Fashionable and popular for youth. The outer material is made of 100% wool, and is comfortable to wear. It is very warm and easy to wear, and it is very light, so it wont feel tight on your shoulders. This convenient half celestial functional jacket will keep you comfortable even in the cold winter of Japan.