I have allowed myself to be convinced by the many positive reviews and bought my 11 months old son the cup. As I unpacked the cup, I read that one must clean it either in microwave or in dishwasher or with hot water. Frankly, I think that's a little gross. When I had rinsed the cup by hand, I needed only for a while, until I had reassembled it correctly. Is a little tricky, I think, to put all these inserts so again in the cup that no fluid can leak next door. If he falls over, but the cup has leaked despite proper Zusammesetzen. Therefore no recommendation to buy from me!