What's the best source of those Kleen Kanteens?

I've been mulling those on occasion but my decade-old 32oz Nalgenes (Polyethylene) are going strong and weigh just 3.5oz. They get a lot of use, including being frozen for use in the cooler on camping trips.

http://www.rei.com/product/402049


I recently decided to be more prepared, even on local walks (C&O Canal, Great Falls NP) and to that end purchased a titanium Snow Peak Trek 700 mug (has a lid and weighs 4oz) and titanium Vargo wood stove. The Vargo folds down incredibly small and weighs just 4oz.

Another approach to the same goal.