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The color change from purple to pink is such a neat trick—my baby giggles every time we roll it around after it’s been in the fridge. It’s a clever way to sneak a little science into playtime without them even noticing.

My toddler was mesmerized watching the purple ball turn pink as he rolled it across the floor. It’s a clever way to introduce cause and effect during playtime, and the color change happens quickly enough to keep his attention.

My 6-month-old loves grabbing it, and I enjoy how it introduces a simple science concept during play. The only small downside is that the color change is subtle in normal room temperature.