Most are made of 18/8 food-grade stainless steel (Guyot Designs uses 18/10 surgical grade stainless steel).
They are made in China. Most companies claim that their bottles are made “responsibly” in China.
Since most stainless steel water bottles are not insulated, they are not good for hot liquids (This can be overcome by using an insulating tote).
Freezing [...]

Stainless steel water bottles are cleaned easily with baking soda or distilled vinegar.
A new water bottle should be soaked in water and vinegar overnight. This will get rid of the metallic taste that can be a source of complaint.
Water bottles can also be cleaned by putting some rice with vinegar and shaking well.

Stainless steel is defined as a steel alloy with a minimum of 11.5% chromium content. The name comes from the fact that stainless steel does not stain, corrode or rust as easily as ordinary steel. 300 series stainless steels (of which water bottles are made) comprise over 70% of total stainless steel production. They contain [...]

In 2006, a research study described something quite extraordinary. A third of male fish in English rivers were in the process of changing sex, from male to female. Such reproductive anomalies are not just limited to fish. In humans, studies show that girls are hitting puberty earlier than ever, and that male infertility is on [...]

There is much debate on the internet about the safety of SIGG water bottles. Much of the debate arises from the fact that there has been little to no research on their safety compared to stainless steel and plastic water bottles. In this article I will go over the limited information available (and why [...]