From a quality point of view, this series of books is excellent with laminated pages and solid yet my son is far from a tender with its business. The quality is very good explanations, the designs are simple but well illustrate the text. For the specific case of "Air travel", it explains the operation of airports: Terminal, informaTION panels, counter denregistrement, treadmill, area of embarkation, tanker, cargo, walkways, cockpit, control tower ... We we also present the staff: hostesses and stewards, captain, co-pilot and air traffic controller. It is very rewarding for children from 3 years and much more! This allows danticiper dexpliquer and simple manner to a child who must fly how it will happen.