My youngest wanted a tumbler like her older sister and me. My oldest needed something easy to hold when transitioning from bottles. I've tested seven different cups over the past two years. I wanted sippy cups that didn't leak, and were good for tooth and mouth development. Toddler at table with her dad Some work well. Some have too many pieces. A few leak. Here's what's held up. What Makes a Sippy Cup Worth Buying Easy for toddlers to use independently Simple to clean (fewer