Whether you're trying to juggle a full day of classes or work the 27 oz. Classic Klean Kanteen will help you stay happy and hydrated all day.Its made from high quality food grade stainless steel that's totally free of BPA and other toxins. Because stainless steel is safe, the bottles have not been coated 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. No matter how many times you refill it, no matter what you put into it, your 27oz Klean Kanteen Classic will keep your drinks fresh, crisp and clean tasting. BPA and eco friendly. Doesn't retain or impart other flavors. Slim design, fits into most bottlecup holders Fits in most standard bike cages. Round corners are easy to clean with no hard angles where dirt germs or bacteria can stick. Fits large ice cubes. Reusable and 100% recyclable. BPA free polypropylene pp5 caps. Stainless loop and flat accessory caps are available. Materials: 188 food grade stainless steel. Caps are made of BPA free polypropylene pp5 Size: H 9 without cap x W 2.75 Opening diameter: 1.75 Weight: 6.125 oz. without cap Capacity: 27 fl oz.