I think this cup is great. I've only used it for one cycle so still getting the hang of using a cup for the first time but when I've fitted it correctly it doesn't leak and is comfortable. I've found that the key to a good fit is that once inserted you can feel from the base of the cup that it's gone back to its original shape and not still folded. I've found that on heavy days I would change every 4 hours but normal days can go 6 - 8 hours. I'm really happy that I've made the switch.