Originally Posted by
fietsbob
Sigg has a special liner in their aluminum sport bottles AND the cap design
is better so it lets the air in, as fast as you can drink the water.
Yes, a liner made of the same chemicals people are trying to avoid by buying a metal bottle in the first place.
Yea, it's "safe" - which really just means it doesn't leech the buzzword chemical of the year - until next year when the chemical changes and it's not.