Hey Mike,

What a great product! I have heard good things about this through several people. One of my good training partners up here in Greenville, highly recommends them too. Anyways, it's great to see you are from Atlanta too as I used to live there before moving to Greenville. Anyways, I compete in triathlons and would appreciate nothing more than something like these on those nasty humid days. I just wanted to say congrats on a great product and wanted to ask you a question about them. How durable are these? How long should these keep working for?I look forward to hearing from you.

Best,Dan M.