Description

Sand that will not get wet: Magic sand is a hydrophobic polymer, which means it will never get wet! It started with ordinary sand, but then it was dyed and covered with waterproof polymer to keep it dry.

Reusable: build sand castles underwater, then drain the water and let the sand dry! You can use it again and again.

This is a lot of fun for kids of all ages and even adults.

Get learning: teach and learn the properties of water molecules and the working principles of hydrophobic products.

Students can test magic sand first, then ordinary sand, and pay attention to the difference in its waterproof performance.