This learning cup is very practical: it allows baby learn to drink by the glass without putting everywhere thanks to a very intelligent valve system. This is that the baby's mouth, by pressing the flange, releases the liquid. Very practical, until the little rascal has with his fingers as he can support :) The mug also has a cover (relatively tight) for transportation and / or storage. It is finally easy to clean (it disassembles and everything goes in the dishwasher).