Available editions are hardcover; the book is listed as 40 pages.
The listed suggested age range is 4–8 years.
Editions are available in English and Spanish.
Listings show two sets of dimensions: 9.5 in (H) × 1.3 in (W) × 7 in (D), weight: 1 lb; and 8.2 in (H) × 10.7 in (W) × 0.5 in (D), weight: 0.95 lb.
Milo takes a long subway ride, studies the people around him and sketches imagined versions of their lives, then learns that you can't really know someone just by looking at them.
The description highlights imagination and perspective-taking, art and sketching, family relationships, and a child's experience with parental incarceration.
Illustrations combine the illustrator’s signature cut-paper collage with images of Milo’s sketchbook featuring child-like crayon drawings.
Review excerpts describe the text as flowing like poetry and call the book bright, fun, whimsical, exquisite, and poignant with a heartfelt ending.