12g of silk wadding made from silkworms. I bought a lot, so I'll share some. It's a very expensive and valuable item. A 100% silk wadding futon is very warm, doesn't easily generate static electricity, and provides a good night's sleep. I bought it to repurpose kimono and make jackets and vests with wadding inside. This is the product in the third photo. It's currently sold and not old, so it doesn't smell musty. There are various uses. When stretched out, it becomes fluffy, so 4g becomes like the photo. 12g is three times that amount, and when spread thinly and applied to the back, it's very warm. Please research other uses. - Weight: 12g - Material: 100% silk For reference, about 7.5g usually sells for around 1300 to 1700 yen. Thank you for looking.