belated green report: sigg is conducting a voluntary exchange program. shar's bought many siggs for her friends. if you wanna exchange your's, kula is an exchange site. got to get them to me by october 31 tho. if you wanna be safer than sorry that is, but you are talking to that gal who has her nalgene from 2001. i'll bring to the bottles in and bring back you a shiny new sigg with powder-based, co-polyester ecocare liner instead of previously used water-based epoxy resin liner. exciting no?