enclosed my review of the product. I set photos and a video still follows. The long video of 20 minutes in length on my YouTube channel "DerTestMichel".
There is indeed the cloth in different colors (blue, black, white and green) to buy and in the length 2.8 x 4 meters and this here.
I had opted for the longer cloth in 3 x 6 meters because I wanted to have more space to the front. The substance is very high quality and there is a tunnel to the rod to pass through. It is probably the same material as the Walimex the 6 meter costs 60 euros in 2.8 x. Both have been 140g / m2 being made a false statement in Amazon (Walimex 110g / m2). I have the tunnel but not used, as I have the fabric simply thrown over the rod and secured by locking brackets (this is also available at this seller to purchase). This way you can attach the fabric and stretch simultaneously.
Still looking for the background system should times the DynaSun FS901 View from the same seller (have there also a video created).
Greeting Micha