Endorsed by Trans-Youth and Mermaids. No surprise there.
'This is a story about you') and goes on to define sex (a guess based on body parts observed at birth)
A middle section features a number of illustrated clothes, toys, and accessories accompanied by the question, 'What do you like?' A removable 'Gender Wheel' that students can turn to complete three sentences ('I have,' 'I am,' and 'I like') using a range of terms/expressions ( gender neutral, trans, not sure, etc.)
I am going to investigate further.