These small water beads can grow into colourful globes!
The water beads can become much larger!
The water beads contain a substance called polymer and the polymer is hydrophilic.
That means it loves water!
It manages to absorb so much water that the beads expand and grow larger. It is a fairly similar to the fabric found in diapers, that’s how they can soak up so much urine.
When you’re done you can let the spheres dry, then you can use them again and again.