They're okay

I wish the size range was bigger. Some of the sizes repeat themselves, sometimes the size difference is barely noticeable. Shapes are also almost the same, most of the brushes are square.
When it comes to a quality I can't really complain. I can't compare them to any fancy brushes, but I think for this price they're doing the job. I was using them for watercolours, but like I said I don't have any brushes meant to be used specifically with watercolours so I can't compare. I would say they're good for beginners. You're getting 25 brushes so the price is really good.