page_title: Bouncy ball
section_title: Superballs
hierarchical_section_title: Bouncy ball / Superballs
caption_attribution_description: A 26.5mm glittery Super Ball, yellowed with age and resting on a base.
context_page_description: A bouncy ball or rubber ball is a spherical toy ball, usually fairly small, made of elastic material which allows it to bounce against hard surfaces. When thrown against a hard surface, bouncy balls retain their momentum and much of their kinetic energy. They can thus rebound with an appreciable fraction of their original force.
context_section_description: A superball or power ball is a bouncy ball composed of a type of synthetic rubber (originally a hard elastomer Polybutadiene alloy named Zectron) invented in 1964, which has a higher coefficient of restitution (0.92) than older balls such as the Spaldeen, so that when dropped from moderate height onto a level hard surface, it will bounce nearly all the way back up. They were first sold by the Wham-O toy company under the name Super Ball, which remains their trademark. Superballs are often smaller than a Spaldeen.
caption: A superball
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