We're sorry to hear the Ninjamas don't fit. We measure thousands of children in hopes of finding a fit for as many kids as possible. We’d like to learn more about your experience so we can help you further. Please reach out to us when you can by calling 1-833-NINJAMA.

As parents, we understand how you feel, and we go to great lengths to design a product we hope your kiddo will be comfortable in, Susan. Please know that size and fit are most important when ensuring he gets the leak-proof fit needed with Ninjamas, and because children grow to be different shapes and sizes, there may be an alternative that works better. Your feedback helps us improve, and we're happy to help you further. Call us at 1-833-646-5262.