I bought this for my 4 year old for his birthday as I'd seen it in a magazine article and liked the illustrations. When it arrived, it was much better than expected! This isn't a book at all, it's a fold-out, double sided mural, printed on good quality, thick card. I'd say over a metre long, it's now beautifully decorating my son's bedroom, where he studies it's details daily. One side has the history of flight, the other side is more modern, including space travel. There's also a cover (about 4 pages that fold out) that's separate, that tells you the story of flight from the images. I can highly recommend this; it would make a wonderful gift for any little boy.