This is silk wadding. It's light and warm silk wadding. It's also called "seoi watta" (silk wadding to be worn on the back) or "fukuro watta" (bag silk wadding). It seems that people in the old days used to wear this silk wadding on their backs (between their undergarments and kimono) to keep warm. It's natural, made from silkworm cocoons. It's not pure white, but slightly yellowish. In some places, there are still remnants of the cocoons. Since it's natural, the appearance may not be perfect, but it doesn't affect its use. Use it when you're cold or in places that get cold. You can apply it to: * Your back * Your lower back * Your toes * Your neck There are various ways to use it. I understand that in some countries, it is used to wrap the bones of the deceased. It is also used to wipe Buddhist altars. We will ship it folded up small. Due to the nature of silk wadding, the weight is approximately 8 momme (a unit of weight). Please understand.