Not good for thick hair definitely not made for curly hair [SEP] In theory these should be great but the truth is they aren't made very well. I can't say I'm shocked given the price was less than $8 for 9 of them.  Definitely not for thick hair and questionable for most adult hair. The main issue is that the "closure" doesn't have enough of a knotted area to be very effective on staying closed. So if you're wanting for younger girls or adults with very fine hair they are possibly worth getting. The colors are the thing that will make it worth the purchase.