The clips are made of very low quality plastic. One of them broke on first use while I was mounting the empty bag to the saddle, making the bag useless.
I am very careful and did not force it, it broke under very light use.
Reviews for the same bag on other retail sites complain about the same issue.
When you factor in the price and hassle of fixing this sort of thing, it becomes uneconomical and you might as well just buy something more expensive from a recognised brand.
The seller was not interested in rectifying the issue.