The BIO-SPONGE product is a carrier for graduated release of auxiliaries (chlorine, resins, dyes, permanganate) on garments during treatments. It allows to reach excellent results in dyeing with respect to tatters or other vehicles and can be used to make homogeneous sponged or marbled effects on the garments. BIO-SPONGE is made with a specifically designed material to have good absorption capacity and resistance to treatments, so with a simple washing can be reused, until complete wear of the same.