I love this design so much that I actually bought 4 of them. It was the second one I fell in love with when I first found Espionage Cosmetics (the first is the circuit board, by I digress).
I'm really disappointed to say that the adhesive on the batch I recieved is non-existent. I've gone through two of them and couldn't get any of them to stick - I tried smooth nails, I tried slightly not smooth nails, I tried rubbing alcohol, and much to my chagrin nothing seemed to work. I'm super bummed out about it and I can't rate it very high since I didn't end up with a manicure from it.