Pannier

Purchased for my second daughter, but she didn't wear it, so I'm selling it.
It was purchased online.
It is brand new and unused.

The size is 35cm in length. I believe it's around a size M. The actual measurement is 53cm, but it's elastic, so it will stretch.
The color is white.
I cannot determine the fabric as there is no tag.

My second daughter, a high school student, tried it on and said it felt scratchy, so there might be some scratchiness. Please understand.

There is a small stain (or possibly a mark from when it was purchased, or from my second daughter). I'm not sure. Please understand. (See image 5)

Would this be suitable for a child in a family that understands these points and needs it?!

It will be shipped compressed in a transparent bag with a pattern on one side.