I bought those klean Kanteen bottle in chicago last week and they are pretty good, i think they look better than the tatonka ones because of the wide neck you can put them in the dishwasher, which i like because i'm always stinking out water bottles with juice etc and i'm no sure those petzl tablets clean them out right, just my two pence worth i got them from llbean and the north face shop, they wern't any cheaper than those ones advertised above.