Bought to put on top of my Estee double wear foundation. Fits perfectly and so far had no issues. Pumps perfect amount and no more pouring out foundation from the bottle. It sits on my vanity and I have not traveled with it. Nice; it comes with a lil cover for the top. For what it is, a bit on the pricy side.
Honestly have no idea what took me so long to purchase this, but I'm so glad I did! It helps to avoid wasting the product. Four stars because it doesn't already come with the foundation, which I feel for that price should be included.