Hide n Seek sippy cups from NUK are a fun and interactive way to keep your baby hydrated. These hard spout cups engage babys developing senses with unique designs that change color with your childs touch, revealing hidden objects and characters. The easy-grip cups are ideal for little ones whether theyre crawling, cruising, or just taking their first steps. Bite-resistant spout is durable and the one-piece flow control valve means no leaks or spills. Plus, cups are top-rack dishwasher-safe for fast, parent-friendly cleanup and free of harmful chemicals, like BPA, for total peace of mind.