This Review Title is These stay put! and the content is: They have an extra 2 rows of teeth inside that keeps the clip securely in place. I have long fine hair that is not easily secured and most clips slide out.  I love these and they don't slide!  Have to pay attention when putting on or my butterfly will be upside down..There are other information for this review, one is This reviewer did purchase it and the other is 2 people think this review is helpful.