US Patent 11236471 Artificial turf field system

An artificial turf field system is provided. The system may include a plurality of synthetic turf strands attached to a backing layer and an infill material positioned between the synthetic turf stands. The infill material may include a plurality of porous particles. A sub-layer may be included beneath the backing layer, and may be formed of a resilient material. A support layer may be included beneath the sub-layer, and may include materials configured for drainage. The porous particles of the infill material may include porous ceramic particles and the sub-layer may include rubber. The porous particles may be at least partially coated, for example, by a polymer coating. The infill material may be free of sand and/or crumb rubber.