The 2000mm refers to the height of a column of water over I think a 1cm square piece of the fabric. 1500mm is the minimum to be called waterproof (if all seams are sealed). 3000mm is common for ground sheets and should be the minimum for tents. The higher the figure the longer it will last since UV degrades the fabric (nylon quicker than polyester). BTW Polyester is heavier but cheaper so this is likely to be polyester which is more resilient to UV degradation. Ground sheets are mor commonly 5000mm Hydrostatic head. As you'd expect the higher the figure the better the waterproof it is and the longer it will remain so (loses HH over time as the UV degrades and thins the fagbric). I have a single skin tent at 8000mm fly and 10000mm groundsheet (Vango Force 10 Vitesse). This is a very water proof tent just as with single skins the condensation is a problem.
This tarp is good value. The closest is the Robens tarp at £40 or £45 with poles and only 3.5m square. They also do 4.5m square one. Robens has a higher HH and is better made. I will get a 3.5m one soon and ditch the poles for lightweight camping.
Aldi and Lidl do some very good kit at ridiculously cheap prices. They had a £19 altimeter watch a few months ago that sold out in hours.
This tarp is good value. The closest is the Robens tarp at £40 or £45 with poles and only 3.5m square. They also do 4.5m square one. Robens has a higher HH and is better made. I will get a 3.5m one soon and ditch the poles for lightweight camping.
Aldi and Lidl do some very good kit at ridiculously cheap prices. They had a £19 altimeter watch a few months ago that sold out in hours.