Let your little hero get into the action with the Wonder Woman insulated hard spout sippy. Best yet, these toddler sippy cups have all the features you're looking for in a great sippy for your child. The silicone valve helps control flow and prevents leaks. The sippy cup lid has a Drop Guard bumper to help prevent breakage when it lands on the floor. It's a great transition cup too. The bite-resistant hard spout's design mimics the shape of an open cup. Insulated cup walls keep drinks cooler longer, making it great for families on the go.