Let's keep it simple: this tumbler doesn't leak. The silicone sipper spout has a built-in valve that stops water from flowing when no one is drinking,
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Old MacDonald Farm Sippy Cup Name Tumbler, Krcil Designs – Krcil Designs, Personalized Gifts, Personalized Cups with Names, Photo Cups, Picture T-Shirts, Personalized T-Shirts
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