Environmental impact of a tech-T shirt?

Pretty much the same thing that happens to non-tech shirts, I would think.  They get worn, sometimes worn out, usually not.  Maybe given to goodwill.  Eventually in a landfill.

I know that some people will use cotton shirts as rags eventually, but I'd say that only a very small percentage of any clothing actually goes through that step in the process.

Not sure if this counts as spam/advertsiing, but a buddy of mine started this company a few years back. They're more known in the ultra-marathon corwd, but have some bike clothes as well.

http://www.atayne.com/learn/our-story/

There's definitely recognition of this issue in a lot of circles. This company does all recycled materials and doesn't use a lot of the nasty chemicals used in mass produced tech clothes. The guy is very granola, but in this venture I think its a big win for everyone.

Made from petroleum.

Biggest impact is all the CO2 I exhale when I wear them.

Hippies won't be satisfied until we're all naked I guess.

That is all fine and good for marathoners, and even swimmers... but not sure I want to be that close to my saddle.

I'd have to assume the environmental impact is no more than when I pour used motor oil and antifreeze down the storm drains. . .  /red font

I do turn cotton shirts into rags (which I use on a daily basis) and I donate extra wornout shirts to the animal shelter for bedding, but I haven't had a tech shirt wear out yet. 

I don't know what I will do when that happens, but I won't feel guilty.

For the record: I hated exercise and avoided it whenever possible until I discovered tech fabrics in 2004.