Balls, balloons and other inflatable objects made from a plastic material with an improved resistance to tearing, suitable for use in gymnastic activities, for rehabilitation and physiotherapy comprise as stiffening material an inert mineral charge having a granulometry between 0.02 .mu. and 500 .mu., in an amount between 0.50% and 20% by weight.

 
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> Method of reconfiguring a flexible planar item to a simulated character

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