Oh, I have them and I LOVE them! if you did a search here, I think you would have found me singing their praises. They freed me from the miserable routine of the Deva metal clips, they are super easy to use. You dont need to twist your hair- you just open them, have them grab a chunk of hair and that is it. they come in a pack of 12 - I dont need more. I do think it helps if your hair is kind of thick, but I didn t think they would work on my hair, and they work great; they create volume and curl definition and I would never use any thing else now.