My son is an expert at using sippy cups to decorate everything. He pushes the sippy spouts/straws on tables, car seats, windows, etc. to make the drink leak out. This cup is TOTALLY LEAK PROOF. We have had it for two months and he can't even get the drink to squirt out by squeezing it. LOL. I came to Amazon to buy more so I can throw out all the other sippys. This is a great cup. He just has to learn not to turn the cup up when he drinks. My 20 year old still has problems with that sometimes.Buy Munchkin Mighty Grip 10 oz Spill Proof Straw Cup!
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