This is from Aoba, the makers of the Toko-chan Belt. Because it's mesh, I was able to use it without any problems even in the summer. I used it daily for about 2 months after my baby was born. Because of this, the fabric is stretched in places and there are some stains. It originally had a tag, but it tore off during use, so it's no longer attached. Please only purchase if you are not concerned about these issues. I will give it to whoever wants it. I am also selling a size M. Please feel free to comment if you need both items as a set.