I purchased this at a Muji store. It's made of water hyacinth. It seems to be woven from water plants, but I was bothered by the smell and decided to get rid of it. I'm not sure if it's the unique smell of the grass... I bought it intending to use it to store my pajamas, but I didn't want the smell to transfer to my pajamas. Since I don't have anything else to put in it, I'm putting it up for sale.