Perfect in every way except for the smell! Specially in a kids room! Indeed you need to let it in the air for at least few days!! Other than that the mattress is worth every penny and is very comfortable for kids and adults! The six inch height is perfect for a kid's bed; it doesn't eat up the head and foot bed.
I recommend it without any hesitations. Came fast very well packaged and not too heavy to maneuver! Just right!
The other reviews were quite helpful.