This is the only cup my son will drink from and it constantly leaks! It was fine when he only drank water from it but now that he's starting milk it's very irritating. Liquid will just climb out the straw while the cup is just sitting there on the table. Like a puddle of it. And it won't stop it just keeps coming! Before I go buy a new one I wanted to see if anyone else has it and maybe I'm doing something wrong!? Hahaha tia!