This book is used by my son who had a lot of fun creating paper paper aeroplanes before he became a teenager.  Some of the designs in this 96 page paperback book are complex and will need an adult to assist in the creations.  It also explains the science behind how they fly.  This is a great Dad and son hobby book, with little out of pocket expense to create these paper marvels. Other than our rabbit chewing a small corner off of the the front cover and a tiny chew mark on the corner of first three introductory pages, all of the book is in tact and in good condition.  All the design pages are very clean and undamaged.