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Image of Tub Sub in packaging
Image of Tub Sub in boat and sub positions

Tub Sub


Regular price $9.99 Sale

Why do things sink or float? Tub Sub knows. As a boat, it floats. As a sub, it sinks. For a floating boat, push the flexible blue part down. For a sinking sub, pull the blue part up and fill the bottom with water. Only the periscope will stay above the water.

  • Recommended for ages 12months+
  • Encourages thinking and reasoning
  • STEM