Looking at the sizes and capacities, the Femmecup (45x50mm, 18ml) has nearly identical dimensions to the large UK Mooncup (46x50, 13ml) but a larger capacity. And their shape/design is very similar as well. Yet the Femmecup doesn't seem to be a very popular cup. I wonder why not.
Has anyone used both? What are their similarities? What are their differences? How does one compare to the other? What are your impressions of each?