My son (aged 6) had this for Christmas last year and it was an immediate hit and remains one of his favourite books. Despite being a bit American in places, the book takes repeated reading as well as being something children can look at on their own and it combines fact and fiction almost seamlessly. You therefore move from animals of the Polar regions and descriptions of Father Christmas's original green robes, to pictures of the villages where the elves live and an analysis of the sleigh and its special features - how it flies, where Santa keeps his hot water bottle and the fairy dust to a map of the route Santa travls on Christmas Eve. It even has a Christmas card in the front from Santa and Mrs Claus and there are lots of things to pull out, fold back etc.
A good buy at Christmas for everyone who adores Santa