The SubTile is a product for artificial turf sports fields that can make the use of granules or granulate obsolete. Once laid together, SubTiles form a mat between the artificial turf and a foundation made from impermeable cellular concrete. In their basic form the tiles measure 75 x 75 mm. They are supplied for a large surface area and are made from 100% recycled materials, including artificial turf. At the end of its life cycle, the tile is completely reusable and therefore circular.