I have hair down to my waist that is fine but thick. I have never found a clip or bobby pin that works well...at all. I work with kids all day and so I usually have my hair back in a pony tail (even then it gets in paint, glue, my mouth, everything!) So, when my friend told me about these pins I was skeptical because nothing had ever worked on my long hair before. I thought maybe they would stay put for an hour and fall out...NOPE! These babies are a LIFE SAVOR! I put my hair in a cute bun, spin one from the top down and the bottom up and I am good for the WHOLE day!! No slips, falls, loosening, etc. It is also comfortable....which is really important. I mean, who wants their hair pin kicking their a** all day? Now my hair is up, out of the way, secure, ADORABLE, and done in a flash. After having these for only a week, I wonder.. how did I live before without them??