Not non-slip
The value for money can't be beat here, but if you have thick or unruly hair you should know there's no sticky grip stuff on the claws like major brands (not that the product is advertised to have such a thing) and that has a huge impact on holding all that hair. Like, these won't hold steady, they slip. But if I put my hair in a loose pony and twirl it up under the clip it seems to do ok. They ARE strong, though, and not made cheaply.
Rating: 4 stars