Groundsheet for the Arkansas size 4 made from polyester coated fabric. These are big wide groundsheets designed to protect the ground from being churned up and your lovely tent from filling up with dirt, mud and annoyed bugs of all sorts intent on revenge for ruining their homes. Do your bit for the environment, use a groundsheet so it can recover from lack of sunlight quicker. Unless of course you've thrown it over your allotment in order to kill everything off so you can grow some nice veg. French beans are our favourite. Hint hint. 600cm x 580cm. That's the groundsheet size, not the French bean patch size.