Whether you're heading out for a short hike or giving that big presentation at work, the 18oz Klean Kanteen™ Classic holds enough to keep you hydrated but is also small and compact so it fits easily into your bag, pack or briefcase. The very first Klean Kanteen™ ever made was about this size, so not only is this the 18oz Klean Kanteen™ Classic, it's also the original. So of course it's made from fully recyclable, 18/8, food-grade stainless steel, is 100% BPA- and toxin-free, and doesn't need to be lined like some other metal bottles. The large-mouth design makes it easy to pour in ice cubes or a smoothie packed with frozen berries. And cleaning the 18oz bottle is as easy as giving it a quick scrub or running it through the dishwasher. It's also durable enough to last years and will never retain or leach flavors. No matter how many times you refill it, no matter what you put into it, the drinks in your Klean Kanteen™ Classic will always taste just right.

Our most popular size, 27oz Klean Kanteen™ Classic is perfect for your on-the-go life. Whether you're trying to juggle a full day of classes or work, the kids' extracurricular schedules and your own hobbies, or a trip to dog park between your workout and happy hour, just one or two fill-ups will help you stay hydrated and happy all day. Like every Klean Kanteen™, the 27oz bottle is made of 100% recyclable, 18/8, food-grade, stainless steel so it doesn't need a special lining like some other metal bottles. It's completely BPA-free and won't leach toxins or funky flavors into your water, juice, smoothie or drink of choice. Plus it weighs only 6.125 ounces and is incredibly durable, so it will last for years. The large-mouth design allows you to pour in big stuff like ice cubes, and makes cleaning your Klean Kanteen™ Classic as simple as washing it with mild soap and warm water or throwing it in the dishwasher. Yet the slim design fits into most cup holders and the Kanteen™ Bike Cage. Day after day, year after year, your Klean Kanteen Classic will keep your drinks fresh, crisp and clean tasting.

When 27 ounces just isn't enough, this is. The mother of all water bottles, the 40oz Klean Kanteen™ Classic is great for long car trips, camping, a late-night session at the office, a trip to the beach or any time you need to carry a lot of liquid and don't have the option of easy refills. Just like every Klean Kanteen™, the 40oz Classic bottle is made from recyclable, 18/8, food-grade stainless steel that's 100% BPA- and toxin-free. Klean Kanteen™ bottles don't need to be lined like some other metal bottles and don't retain or leach flavors either. So your drinks stay fresh and clean tasting far longer than in a bottle made from aluminum or low-quality stainless. The wide mouth makes it easy to throw in big stuff like ice cubes and quick to clean too—just scrub it out with soap and water or toss it in the dishwasher. No matter how many times you refill it, no matter what you put into it, the drinks in your Klean Kanteen™ Classic will stay fresh and tasty.