Hand-made. This material is completely hand-made according to the most ancient Impruneta tradition. Laying is carried out with mortar or glue. Suitable for outdoor and indoor installations. Classico rough and uneven surface, showing the typical irregularities of manual calking. Increased thickness for the 40x40 size. Proofing water-proof and deep humidity treatment. It considerably reduces absorbance, making treatment and maintenance easier.