Unused item, stored at home. Made in a foreign country, so the thread finishing is rough. There were some loose threads, so I sewed them with a sewing machine. I also double-stitched the perimeter. The envelope in the photo is A4 size. It can be stored small in the corner pocket, but I think it's too small. 100% polyester or nylon. It's light, so it can be sent by regular mail, but the plastic stopper attached to the string is thick, so it will be sent by Yu-Packet Mini. Can be changed to Rakuraku Mercari delivery if purchased with other items.