22 in green ground access mats 100 T load capacity-HDPE 4×8 Liberty Mat, black, 77lbs, 4' x 8' x .5". virtually eliminate damage to lawns and landscaped areas and provide traction for vehicles operating in mud or sand. ' heavy-duty, half-inch thick, 100 percent polyethylene mats support 60 tons of equipment, such as trucks, chippers or stump