Nylon vs. Cotton
Some people will fault synthetic fibres  because they don't break down as fast as natural fibres when disposed of.
"Fault" is nylon's strength
The very fact that nylon is resistant to decomposition is what makes it so durable. To make a durable product, we think, is environmentally sound and good business.
Reducing waste better
True, nylon may take longer to decompose than cotton but once an object has been buried in landfill, and it's usefulness  destroyed forever, what's the hurry?  We believe what is important is to reduce the amount of waste that goes to landfill in the first place.   One Shopantuk will replace hundreds and perhaps thousands of plastic or paper bags. 
Energy efficient nylon
Since a Shopantuk nylon bag weighs 1/3 to 1/5 as much as a cotton one, then 32 grams of  nylon will replace 96 to 160 grams of cotton.  Remember that large amounts of petroleum products are needed to produce cotton (ploughing the fields, seeding, tilling, fertilizing, pest control, processing and transportation). 
Three thousand year trial
Cotton fabric has been available for over 3 millennia, and still people do not carry a cotton bag in their pocket or purse.  Why?  Because of the bulk.  By contrast, the Shopantuk bag fits comfortably in one's pocket or purse, always at hand for that unplanned need.

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