Types of Pitches Pitch typeDescription2GShorter and denser sand-based or dressed surfaces with a pile height of usually less than 24mm.3GLong-pile synthetic grass with a pile height of 40mm to 65mm. Typically filled with a combination of sand and performance infill.4GSynthetic grass without a need for rubber crumbA guide to all astroturf pitches: 2G, 3G, 4G and beyond www.sispitches.com › the-definitive-guide-to-all-types-of-astroturf-pitches-…