Paving in CE marked double layer vibrated compressed concrete slabs, produced and controlled according to EN 1339, composed of three rectangular and square sizes 36 x 24 - 24 x 24 - 24 x 12, thickness 8 cm, finishing series DRENANTI (double layer). ). The paving slabs must have a draining capacity of approximately 80 l/min m2. The special double-layer finish is produced using selected aggregates which guarantee abrasion resistance, durability and long-lasting colouring. The paving slabs, produced with natural (non-recycled) aggregates and non-organic oxides, have a homogeneous and colourful finishing layer and an irregular, sharp-edged visible surface typical of natural stone, without chamfers.