The polymer links in the original Hoberman sphere allow it to increase effortlessly from a 9.5" to a 30" sphere!Features: Instructions for hanging as a cool kinetic energy mobile Educational booklet about the sphere A21 Cool Things To Doactivity sheet...
The polymer links in the original Hoberman sphere allow it to increase effortlessly from a 9.5″ to a 30″ sphere!Features:
Ages 4+
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