Features:

• Become a tornado expert as you create your own tornado
• Five motorized speeds correspond to the internationally recognized F1 - F5 Fujita Scale of measuring tornadoes
• Includes 22-page, full color tornado guide, full of fun facts, diagrams and science
• Includes experiments on how different materials react in a vortex
• Bonus DVD ? Raging Planet: Tornadoes and Hurricanes

Editor Reviews:

Product Description:
Create your own twirling, whirling vortex and stare into the eye of the storm!

• Become a tornado expert as you create your own tornado
• Five motorized speeds correspond to the internationally recognized F1 – F5 Fujita Scale of measuring tornadoes
• Cool tornado sound effects
• Includes experiments on how different materials react in a vortex
• Durable plastic machine has see-through top for an unobstructed view
• Includes 22-page, full color tornado guide, full of fun facts, diagrams and science
• Conduct your own tornado experiments
• Bonus DVD – Raging Planet: Tornadoes and Hurricanes

Safety warning: This product contains small parts that may present a choking hazard for young children.

Rating : - Kids loved it, but it's not durable
It didn't leak, well at least not yet, but it sure felt like it was going to given its construction. The kids loved seeing and controlling the whirlpool size.