iGGgab river mattresses are a special form of stone baskets that possess an extensive and flat form. They consist of cabled, galvanized, steel-wire with hexagon meshes (diameter 2.2 mm) with a mesh size of 60 to 80 mm.
The basic element consists of a solid metal mesh with a divider mechanically placed each meter, shaping a multicellular container. The dividers stabilize the basket and make the fitting easier this way.
The cover is manufactured and delivered separatly, but consists of the same metal meshes like the basic element. The basic element and the cover are framed with a thicker wire, just like the stone baskets, which stabilizes the container and provides an easy fitting. It is also possible to use a metal mesh with rollers for the closing of the cover at bigger consturctions.