I have a 1L Sigg aluminum bottle, looks like a fuel
bottle with a swiss cross on it. Bought when I lived in
Paris. It is about the same weight as a 1L (32oz)
nalgene, maybe even a little less.
It's a nice bottle but it has two problems. First, it is
really easy to dent. I can almost do it with my fingers and
I really don't have strong hands. If you like to throw your
pack around, you'll have tons of dents on it. Mine's is
litteraly covered with dents.
Second, and the biggest one, it has a strange taste. Not
plastic, but there's definitely some strange taste, maybe
due to the inside coating? I've only put water in it, and
I've washed it quite often.
Otherwise it is fine, no leaking for instance. No problem
in winter or summer. Regarding the lid, I have the regular
one. I guess you can switch between them, because in europe
you can buy the sport opening upgrade.
My opinion is that I would stay with Nalgene or
platypus. So far, I have no taste problem for both. Nalgenes
are almost unbreakable, and the platypus are very light
and take almost no space when empty. The other thing is
the price, I paid my Sigg bottle 10 euros which is a
little bit more than a 1L Nalgene or platypus.
Now regarding the science stuff about man estrogen. I
don't know what to think about it. I mean the sigg bottles
are aluminium, and there's an inside protective coating,
much like in soda cans. This coating may just be as
dangerous as the plastic. For plastic, what sort of
plastic? Nalgene = lexan = polycarbonate. Platypus =
multi-ply polyethylene, same as most water or coke 2L
bottles. Camelbak bladder = polyurethane. Not to mention
teflon on non-stick frying pans, or the various polluants
in the air you breath.
Hope this helps
