sigg dilema: exchange program

It's very dangerous for a company like Sigg to have a "proprietary coating" and not disclose the material. They finally admitted that in fact, they are NOT BPA-free. In a letter from the CEO, Steve Wasik, dated Sept. 1st, the company verified that the rumors that bottles manufactured prior to August of 2008 do in fact have liners containing bisphenol A - a chemical that may adversely affect human health (a known hormone disruptor). You can now take back a bottle that you bought before August 08 to any major manufacturer and they should exchange it for a new one.
via Gorgeously Green