12' x 16' Canvas Tarp 12oz/18oz Olive Drab with Stainless Steel Grommets Approximate finish size is 11'6 x 15'6 due to hems and seams. Weather can cause canvas to shrink. Heavy duty imported canvas tarp made from industrial-rated cotton fabric High quality treatment produces water repellency and mildew resistance while remaining breathable 12oz per square yard before treatment and 18oz per square yard after treatment Sewn, fabric reinforced stainless steel grommets and corners, double-stitched seams and hems