The Melissa & Doug On The Go Color Blast! Alphabet activity book is a fun and mess-free way for children aged 3 and older to learn their ABCs. Using a "magic" no-mess pen, kids trace letters and colour in pictures to reveal vibrant colours, details, and patterns that bring each page to life. This 24-page spiral-bound pad features letter-themed artwork and seek-and-find activities, making it an engaging educational travel companion. The invisible ink marker only marks on the pages and stores conveniently in the cover, ensuring a neat and portable activity.