This book walks a fine line and is subtlety pushes the exclusion of genders completely. It shows a boy with a tiara on and then playing with a purple unicorn; obviously trying to give the boy feminine features.
This book was written to appease those who agree with the transgender movement, and the dissolution of genders altogether.
If you are wanting you son to develope female qualities, to be taught that wearing female like colors, make up, tiaras is ok then this is the book for you!
I maintain that God made males as males and females as females. But if you would like to change what God made, this book will get your kids started at a very young age. What a shame and disgrace!