From Tuesday's news article:
Sippy cup comes under attack Beware the sippy cup. That modest conveyor of liquids, protector of carpets, friend to parents of small children, is suddenly under attack.
A sippy cup, as virtually every modern parent knows, is a plastic cup equipped with a tight lid and a protruding bill-shaped spout. Children can toss it, drop it and turn it upside down, but they can't spill its contents. That's thanks to a valve in the lid that releases liquid only when a child puts his lips around the bill and sucks.
The sippy cup is the toddler's equivalent of the cellphone, essential equipment for the kid on the go. Many parents view it as the most extraordinary invention since the disposable diaper. But in products made for children, popularity often fosters worry. Now, it's the sippy cup's turn.