According to <R37>,one of the bullet points says...
Quote:
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STANDARD BUMPERS must be covered with a tough smooth cloth (1000 denier Cordura PlusŪ strongly recommended).
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So if your cloth is "tough" and "smooth", then it should be OK. (The alterantives are "wimpy" and "rough". Remember, you want this stuff to not rip, it'll be taking a beating.)
If you have never seen 1000 denier Cordura Plus, it's like the stuff backpacks are made from.
Don