(Used) Cainz High-Density Barrier Sheet (7-8 Year Lifespan) with Bonus Item

This is the remaining portion of a high-density -blocking sheet (1m width x 50m roll) that was purchased and used from Cainz.

I did not measure the length used, so I am unsure of the exact remaining length, but it weighs 4.2kg according to a scale.
According to Cainz's website, the new weight is 9.25kg. Assuming the core weighs 0.5kg, I will calculate the remaining amount by subtracting it:
3.7 ÷ 8.75 = 0.42 → 42% of the weight.
42% of 50m is approximately 21m, but please consider this length as a reference only.
The sheet has been stored indoors after use, but it was used outdoors, so please be aware that there is some soil staining on the surface.
https://www.cainz.com/g/4549509895602.html

I found the packaging, so I have attached it.
As a bonus, I will include short plastic pins (partially used).