Sippy cups are practically synonymous with leaks, but if stains on the carpet are not your cup of tea, you'll flip over the mighty big idea of Munchkin's Mighty Grip® cups. Smartly designed with ridges and a contoured shape, these innovative sippy cups are leak-resistant and super easy for baby and toddler hands to grip. Never having to wipe up another puddle in the house, that's surely something to flip over.