i have very thick curly hair and these hold a lot of hair securely [SEP] i have been using these for a month now on a weekly basis a few days each week and i am happy to report that none of them have broken i have had some from other brands that have broken on me after just a week or two these have not done thatthey are really great quality and can hold quite a bit of hair my hair is really thick and tightly curled and i can easily part my hair into just sections and hold each section tightly and securely with these they are definitely strong and flexible it is quite refreshing sometimes depending on how i position them these can be a little too tight actually they never slip off or budge at allalso these clips do not pull my hair or get tangled the colors are very nice too it is a nice change from the all black clips that i have they can be a little hard to handle when your hands are wet or have products on them they get a little slippery other than that i have no complaintsi received this product complimentary in exchange for my honest unbiased review all opinions are mine