Klean Kanteen
It’s hard to imagine that back in the early 2000s you couldn’t buy a reusable, stainless steel water bottle in the United States—plastic was pretty much your only option. When Klean Kanteen introduced their BPA-free stainless-steel bottles in 2004, they figured a few folks might be into them. They didn't know they'd become an international brand that has inspired dozens of other companies to make reusable stainless-steel products of their own.