EXTRAMAT geomat is a three-dimensional geosynthetic material obtained by extrusion of polymer or warp-knitting method with its warp made of glass or polyester fiber and its weft made of glass and/or polyester fiber with polymer coating.

Geosynthetic materials (geogrid) may be embedded in structure of an extrusion geomat as reinforcement. Geomat may be combined with a non-woven material (geotextile) at one (MTAD-1 geomat) or two (MTAD-2 geomat) sides.