artificial grass suppliers artificial football turf artificial grass ARTIFICIAL GRASS SUPPLIERS One of the most important features of Mondo sports surfaces is its double layered rubber construction, called Double Durometer. This feature provides proper shock absorption, optimal energy return, an appropriate coefficient of friction, and total comfort for specific sport activities. Mondo was the first artificial grass manufacturer to apply this unique technique to rubber sport surfaces and, to date, it is the only company in the world that can manufacture such surfaces in two layers which contain differing physical properties.