Shape Stacker (Premium) (Made in USA) (Age 1 & Up) - Unpainted Radioactive The glass tritium lamp inside

The glass tritium lamp inside can be broken if dropped onto a hard surface or if the GlowRing receives a hard blow

it will even respond to just the infrared radiation from the heat of your hand

Pascal's Principle

One straight-forward set of instructions to perform the levitation

Shape Stacker (Premium) (Made in USA) (Age 1 & Up) - Unpainted Radioactive The glass tritium lamp insideExtremely well made and using six different geometric shapes, this gorgeous Shape Stacker introduces 4 key educational concepts for your baby: Shapes Triangle, Square, Pentagon, Hexagon, Octagon, and Circle Shape Names the English name of the shape is clearly engraved on each shape Number of Sides the number of sides are clearly numbered on each shape Patterning the design encourages sorting from smallest to largest size The stacker also helps young