Rounded corners are easy to clean with no hard angles for dirt, germs or bacteria to hide
Stainless steel threads
Slim design of 12, 18 & 27oz sizes fit in most cup holders
Sport and Loop caps are interchangeable
Klean Kanteen 18oz Bottles have a large - mouth design that makes it easy to pour in ice cubes or a smoothie packed with frozen strawberries. It's also easy to clean, just scrub it out with white vinegar and baking soda (or mild soap and water), or load it in the dishwasher.