I orders 2 Clairsonic replacement brushes and they just arrived but they were too small to use with my Clairsonic so I went to their web site and found out that they are not returnable. Silly me, I should have read the fine print on my I Phone before I purchased them but it never crossed my mind that they would sell a product that was so clearly defective and not allow a return. The discount was clearly not worth it to buy something that I just need to throw away. Don't just walk from this website, RUN.