Nylon Strapping Webbing
What do you call the material underneath camera neck straps to prevents slippage?
I want to know, with nylon camera straps (like the ones that come free when you buy a new Canon or Nikon DSLR)), what do you call that material that's stitched in the middle of the nylon webbing? It's the one that prevents the strap from slipping.
A friend said it's nylon but I don't think it is. Help? 
I have noticed/remember a few option regarding this. Some straps that are just the nylon, some that have a thin rubber like coating, just not certain if it is rubber and last a then cloth like material that has a rugged velvet like finish that is slip resistant.
Not too much help. Sorry.
Mark
A look at what is currently available on eBay
 Nylon Textile Webbing,Strapping,Belting,Orange US $9.95 
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 1" 25 Yards Coyote Tan Lite Weight Nylon Webbing Strapping US $10.95
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 9/16" White Nylon Webbing 100 yards-Strapping US $16.95
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 1 Inch 10 yds Super Heavy Black Nylon Webbing Strapping US $13.00
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 3/8 Inch 20 YDS Black Heavy Nylon Webbing Strapping US $12.95
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 5/8 Inch 10 yds Black Nylon Heavy Webbing Strapping CBD US $7.95
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 1" 10 Yards Black Lite Weight Nylon Webbing Strapping US $9.95
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 10 Yds Light Weight Red 1" W Nylon Webbing Strapping US $4.45
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 1" Orange Reflective Tape - nylon webbing strapping US $2.99
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 1" Tan Nylon Webbing-Strapping, Belting-100 yards US $21.95
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 75 - 1" Tension Locks Triglides NYLON for strapping/webbing US $11.99
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 30 yds ea 1.75" Int Locking Nylon Web Strapping US $12.00
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Items recently purchased from this site
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