If your looking for a 32 oz stainless steel with a wide mouth that fits the water filters and is a standard nalgine wide mouth,Guyotdesigns had a backpack one and I have boiled water in them, the bad thing about them is there heavy and thick but they will boil water in a pinch. I have one in my Bob and carry one to work that's dinged up a little from being dropped on concrete many times but works like a champ.


http://www.guyotdesigns.com/stainlessbottles?sc=11&category=-111