TRUCK TARPS are 6 oz per sq yard, 1100 denier, 14x14 weave and 12 mil. These tarps are black on both sides with double reinforced fabric around the hems and 1/4" triple braided roping double stiched in hems, corners and reinforced seams. In lieu of grommets, this tarp has D Rings. D Rings are stainless steel rings sewn into the tarps every 2 feet around the tarp. In addition to these D Rings, there are solid brass grommets in each corner. You will be pressed to find a higher quality black truck tarp on the market.