
We've been using 360 cups for about a year and a half, in the smaller size and this larger size. It took my daughter a few tries to get the hang of using it (she wasn't quite a year old) but now loves it. It only leaks if she drops it hard on our wood floors, but it's not a huge deal to clear up the small spill.We only use water in the cups, and have no issues keeping them clean. I love that the lid is just two pieces (the hard plastic and the silicone lip). We have a cup from another brand that is a three-piece lid, and I don't like it at all.I bought this one exclusively for the space theme and glow-in-the-dark feature. Our daughter likes space (she calls it "my solar system") and always takes water to bed at night (so the glow-in-the-dark is nice).We've recommended these cups to others, as they are so simple and so effective.

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