Blast off on an intergalactic adventure with this ingenious set of rollers! Designed to ignite curiosity about space exploration, this hands-on resource allows children to explore the wonders of space while developing fine motor skills. The set includes: helmet and astronaut, lunar rover and moonscape, the moon and rocket launch, the sun and the solar system, spacewalk and capsule, and stars and telescope. Made from a durable stone mix, each set contains six rollers each measuring 2.75 inches.