12' x 20' Silver / Black Super Ultra Heavy-Duty Tarp – 8 mil Waterproof & UV-Resistant 12x20 - Large Outdoor Tarp, Waterproof Cover for Rain Camping, Tent, UV Protection, Reinforced Corners

I tarp a pop-up, tailgate tent. I bought a blue, medium tarp to replace a previous blue medium tarp. Immediately I could see light through it. I upgraded in weight/thickness, proven by the blocking of daylight. Number %26 placement of grommets seemed same as the blue tarp. Much weightier. I get coverage to almost half of the tent side on the 16' edge, which sheds rain except in high winds. I used the leaky blue, new tarp to hang over the 14' side as a rain/wind block. I recommend Xtreme Cover Pro. Don't waste your money on the blues.

the grommets arr heavy duty but the spacing isnt consistent. other than that great product.