The product “BIO-RUBBER” wants to be a valid alternative to the use of pumice stone for stone-washed treatment, combined with the use of enzymes. This product has the main characteristic of performing a mechanical action and accelerating the action of enzymatic products to obtain the whitening effect of Jeans. Made of natural rubber. In addition to the stone-washed treatment, BIO-RUBBER can also be used for dyeing treatments for cotton / wool items, for treatments in the dryer instead of expensive silicone balls, etc…