High-quality sewing wadding made from 100% silk. Lightweight and easy to handle. This is a large size. It's just the right size for applying to your back. If you apply it to a shirt and wear a jacket, it's good for when it's chilly. I think it's also convenient for protection against the cold from air conditioning even in summer. Please check the photo of it applied to the back. It sticks just by applying it directly to underwear or a shirt. If you put a garment over it, you won't even know it's there, so it's light and warm. Good for summer air conditioning! Also for the "tsuyuzamu" (chilly weather during the rainy season). You won't get cold even if you're lightly dressed. Also, there seem to be various other uses, so please look into them. - Material: 100% silk - Size: 20g To care for it, gently hand wash it, stretch it carefully, and dry it, and you can use it again. Thank you for viewing.