Advanced infill technology

HOLO® is the most advanced infill product available on the market.
Its high profile characteristics rely on the combination two elements:


  • The innovative cylindrical shape with hollow space inside the granule, which makes possible its “shock-absorption” function (worldwide patent).
  • The engineered compound formulation offering a perfect balance of elasticity and resilience, which allow the granule to return to its original shape after the impact.


Compared to the other infill materials HOLO® provides a “natural feeling” never experienced before on artificial surfaces.





  • Improved drainage
  • Lightweight: allows to reduce up to 35% the weight of the material needed for the infill of one pitch


  • Lower temperatures during summer: the heat is rapidly released because of the wider granule surface
  • Excellent low temperature resistance in winter (down to -30°C)


  • Optimal shock absorption
  • Ball bounce comparable to natural grass
  • Excellent sliding performance


HOLO® offers a complete range of products, designed to satisfy every installation requirement and to grant maximum sport performance under every condition:


HOLO SP-D INDOOR Indoor    Halogen-free flame retardant product
HOLO SP ≤ 130 kLangley / year FIFA Quality Concept
DIN 18035-7:2013-6
Infill granule suitable for high-end and standard installations
HOLO SP-D (1) ≤ 130 kLangley / year FIFA Quality Concept
Dutch Soil Quality Decree
Material complying with the most stringent environmental norms
HOLO XT ≤ 160 kLangley / year LND Regulation (Italian amateur soccer league) approval underway Offers extra UV, heat and weather resistance
HOLO GT ≤ 200 kLangley / year FIFA Quality Concept Infill granule specifically developed for areas characterized by very high temperatures, offers maximum resistance to oxidation, heat and UV radiation


(1) The only difference between Holo® SP and Holo® SP-D is that the latter is certified according to the Dutch Soil Quality Decree (Besluit Bodemkwaliteit) which sets severe rules and tight controls on building materials in order to prevent the pollution of soil and water. Holo® SP-D is supplied with an environmental statement which is checked and approved by the Dutch Government. SO.F.TER. is currently the only infill supplier that has obtained this certification following an inspection of the whole production cycle by INTRON Certification Institute on behalf of the Dutch Government.

Common features

The entire range of SO.F.TER. infill granules has been designed to deliver a performance as similar as possible to that of natural turf. All our products are realized using special Thermoplastic Elastomers compounds (TPE), and comply with the most stringent regulations in terms of health, environment and sport performance. Our products differ from the other infill materials for their unique array of benefits:

Because of their premium technical performance and guaranteed level of environmental safety, our products are present in many installations, certified according to the severe standards of:

  • - FIFA Quality Concept
  • - Dutch Soil Quality Decree
  • - Regolamento LND 2008 (Italian Amateur Soccer League)


It should be noted that the overall performance of an artificial system is not determined by the infill alone but depends also on other elements such as the synthetic turf and the elastic shock pad underlay, if present.


Technical features

The SO.F.TER. product portfolio includes two types of infill materials: the Holo® products featuring the innovative cylindrical shape with a hollow space inside, and the Terra® and Forgrin® products with the traditional solid, anti-compaction, cylindrical shape.


Shape Cylindrical, hollow inside Cylindrical Cylindrical
Bulk density, g/cm3 (1) 0.55 0.85 0.85
Infill quantity, kg/m2 (2) 5.0 7.7 7.7
Granule to infill 1 football pitch, kg (3) 35,700 54,978 54,978
Shock absorption: (4)      
- New 66% 63% 63%
- After 20,000 Lisport cycles 65% 62% 62%
Typical shock absorption of natural turf    63-67%  

All above figures show the typical values for an artificial system with a shock pad underlay, e.g.: 12 mm shock pad, 45 mm turf system with 15 mm infill sand and 10 mm performance infill.
(1) Density: the ratio of the mass of a body and its volume. The bulk density of a material is calculated in a way similar to absolute density but takes into consideration the total volume occupied by the solid, including the hollow spaces (solids with closed cavities, open cavities or spongy structures).
(2) The kg/m2 data indicate the quantity of granules needed to obtain 10mm infill height per square meter.
(3) Data for the infill of a field of standard dimensions (105x68 m = 7,140 m2) for a 10 mm high infill layer. 
(4) Data measured according to the FIFA Quality Concept method.