Transform bath time or any on-the-go moment into a fun and educational experience with our innovative water-activated color-changing flash cards These engaging flash cards are designed to captivate young minds as they practice and learn colors in an interactive way Each card is securely attached to a convenient ring, making it easy to keep them organized and portable for travel or outings The set includes a specially designed water pen that allows children to reveal vibrant colors on the cards, sparking their curiosity and creativity Crafted with safety in mind, these flash cards are BPA-free, ensuring a safe playtime for children aged 2 and up