According to the Backcountry.com goat, there's no better place store your favorite beverage than in the BPA-free, stainless steel Klean Kanteen 27oz Bottle. Whether your at work, at school, or enjoying a day on the trails, this unlined, stainless-steel water bottle is always ready to give you a big wet serving of hydrating goodness, and it promises to never hold on to old flavors or leach nasty chemicals.