This cup was great at first. I didn't even mind the many spout parts that need to be washed, but after a few weeks it became impossible to stop it from leaking and making an annoying squeaking noise when our son used it.we still have the cups, but we threw away the tops and just use them as cups.also, they WILL dent if they are dropped.now we own several of the klean kanteens and are happy with those after several months of use. The siggs are good also, but not leak-proof since the tops are sports tops and the narrow opening makes them a bit hard to clean properly.