Dimensions are 10.2 inches by 7.2 inches, which is much larger than competitors. Larger size makes it easier for kids to learn their letters.
Kids can easily trace letters and numbers by following the grooved patterns.
Writing appears as regular ink and then slowly fades, allowing the letters to be traced again.
1 pen with 3 refills is included (only use included pen and ink).
Designed for my wife's home daycare after finding the other options lacking in a couple ways. The main things we changed were the size, putting everything in one book, and ensuring all the images were appropriate for the context.