AlturnaMats are rugged construction mats are made of 1/2″ thick polyethylene. They are capable of withstanding vehicles weighing up to 60 tons, in both hot and cold conditions. They are available smooth on one side or smooth on both sides, ideal for removing dirt or gravel. Mats can be locked together with Turn-A-Links forming a continuous roadway. VersaMATS carry the same load rating, but one side features a less aggressive, more pedestrian friendly tread.