A paver base is a layer laid down beneath pavers to create patios, walkways, and other outdoor hardscapes. usually made up of broken stones of different sizes, but stone dust works well too. This coarse material is required to permit proper drainage and to give the pavers above a secure, level footing. There are several vital uses for paver bases. https://modutile.com/product/permeable-plastic-pavers-24x24/