Chrome retanned sides were drum impregnated with an acrylic emulsion after fatliquoring. The whole processing method - as described in full details-was fixed keeping in mind the results of several preliminary trials. Leathers processed in a similar way but not impregnated were used as controls. The impregnated leathers showed greater tearing strength and elongation at break under tension and better break before and after 100 flexes than those exhibited by the control leathers.