My son received this book as a gift during Ramadan, when he was only 2 years old. He'd been watching his parents fast, so it was a great way to explain what was happening, and to relate with our family. He loved it so much and it helped him understand in better detail what we were doing. I liked it so much I bought a copy for his two cousins, one 3 years old and one 7 years old. They liked it enough to take it to school with them - and it helped their friends understand what Ramadan was all about.
My son particularly liked the part about eating dates, eating while sitting on the floor, and praying in the mosque.