From day one the mission of Klean Kanteen® was to give people an alternative to plastic or lined aluminum bottles. We wanted to create a sustainably produced, reusable bottle that was free of BPA and other toxins. The first Klean Kanteen® was cobbled together from things we bought at the local hardware store here in Chico, California. With some fine-tuning that prototype became the 27oz Klean Kanteen® Classic, the first stainless steel water bottle designed for personal use. We chose 18/8, food-grade stainless steel instead of aluminum or plastic because the metal itself is safe and toxin-free.
Stainless steel is made of many elements and minerals, some of which are actually recommended by the FDA such as iron. Other components of stainless steel including manganese and chromium are often included in multivitamins and other dietary supplements. Because stainless steel itself is safe, we don't need to coat the inside of the bottle with a plastic or epoxy lining, which is one of the main differences between a stainless steel Klean Kanteen and aluminum bottles. Food-grade stainless steel is used in the brewing, food and winemaking industries too. It's the material of choice because it doesn't retain or impart flavors.