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It says vinyl coated, which makes me fairly certain they're concrete.
As a side note, I don't mind the concrete ones up to 10 lbs, in fact I actually like them because you can grip the sphere portion with both hands. Any bigger and the sphere portion gets in the way more often than not, especially the 20 pounders.
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I think filled with good vibes
It says vinyl coated, which makes me fairly certain they're concrete.
As a side note, I don't mind the concrete ones up to 10 lbs, in fact I actually like them because you can grip the sphere portion with both hands. Any bigger and the sphere portion gets in the way more often than not, especially the 20 pounders.