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  • $5.95 CAD
  • Regular price $7.95

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Happy and Unhappy Balls are a pair of black spheres which appear to be almost identical. The ?unhappy? ball is formed from a proprietary rubber compound developed and manufactured under the trade name ?Norsorex ? while the ?happy? ball is made of conventional neoprene rubber. Although the two balls appear to be quite similar they exhibit marked difference in their physical properties