Actually, they are holders for perfume oil vials, not atomizers. I had some of them. MAC came out with them years ago. They were called Hypersouk Potions and were very concentrated perfume oils. I believe there were 3 different scents, with their oh so original names (Hypersouk 1, Hypersouk 2, and Hypersouk 3), and you could buy them individually or in sets of 3, either 3 of the same scent or 3 different vials (I had a set of 3 of the same scent because I remember liking only 1 scent). I didn't know you could buy these holders separate, but I do remember the employees wearing them with a perfume vial in the holder. Hope that helps you.....