12.7mm thick ground access mats for civil Engineering Heavy duty ground protection mats, plastic swamp mats, lawn protection mats features: 1.Leaves turf smooth, even in soft nditions 2.Rugged 1/2” thick polyethylene(12.7mm) 3.Available in black, white or clear mats 4.Build a roadway or worit platform in minutes 5.Long time Warranty 6