Toys By Nature Clear Water Marbles Science Kit – 1/4 Pound Set

Watch as the Toys By Nature 1/4 Pound Clear Water Marbles magically expand before your eyes! Just add water to these deceptively simple marbles and see them grow hundreds of times their original size. These clear orbs not only expand, but they shimmer and roll like tiny crystal balls, providing endless fun and fascination for budding scientists and curious minds alike.
The Toys By Nature Clear Water Marbles features:
Includes a mini tub of clear water marbles
Expands in water to hundreds of times in size
Mimics the appearance and roll of real marbles
Simple water activation
Perfect for science experiments and sensory play