Traditional ballast coated with a special elastomer highly resistant to external aggressions.

The coating makes it non-slip so that it does not require a lead stopper, soundproof, in fact, in case of contact with rocks or falls it does not create intense noises, safer because it does not damage the floors of swimming pools, and above all ecological because the internal materials never come into contact with the external environment, therefore with the user's skin and/or with water.

Colour: black

Weight: 1kg; 2kg;