Hoberman Sphere - Rainbow

A2Z Science & Toys Verified independent store

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The polymer links allow the sphere to change in volume 30 times larger. Features: – Includes an educational booklet about the sphere, a 21 Cool Things To Do activity sheet, a pulle y, and hanging hardware. – Instructions for hanging as a cool kinetic energy mobile. – Magically expands from 9.5″ to 30″ – For ages 4+ Show more