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My understanding - and I’m not a chemical expert - is that the hazardous compounds are byproducts of creating the treatments (but tests have shown varying amounts contaminating the final waterproofing)
Example of the ‘safe’ nature on consumer side might be Teflon coating on pans ….but then again, it depends who you talk to or what site you read up on these things!
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I believe the Columbia outdry technology is notionally better, but haven't tried it yet.
Paramo do in fact have some nominally cycling garments. I have a windproof hi Viz jacket I used for commuting, very breathable and if proofed keeps pretty heavy rain off for the length of my commute (30 mins). Only let down for target audience of this thread is the paramo roomy fit and that I think they struggle to make the fabric stretchy to enable a racier fit? Also the waterproof paramo is arguably too warm for cycling other than in winter?
Is the environmental / health concern with these waterproofing materials primarily located at the production side of or the end consumer / product level? Obviously its both as the chemicals don't never go away but my question is mainly related to if there is are any specific ways that people ought to be handling old waterproof jackets / various materials?