I have very heavy periods, and my body doesn't break down the lining very well so I often have large clots. I was using disposable cup for the past few years, but I recently switched to this and I love it! They're a bit weird to put in at first but I adjusted pretty quickly. Definitely great for people who have heavy periods!
Plus not having to spend money on the mass amounts of tampons heavy bleeders go through is pretty awesome as well!