holds good, but very little material for the money

When I was able to test the pressure cap, I had first looked forward, because the text sounded vielverspechend for me. However, when I then my idea (to hang up in a tool cabinet material where no screws must be provided) wanted to implement, and then began to calculate how much ziplock do I need to mount, I quickly realized the whole band went on it. Good news is that the holder will keep very stable even after 3 weeks.

But:
There is nowhere on how the strong adhesive material clean abbekommt again what can come quite in question for me, if the holder has to be removed.
Ziplock must be adhered to hanging area and the area to be suspended there, that note amount of material!
Instructions in my opinion not a good present

Please previously calculate how much you need, then consider whether it is worth it. I will buy again, so I can still hang another for me.