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. FEATURES BPA-free & eco-friendly Made of 18/8, food-grade stainless steel, no liner needed Doesn't retain or impart flavors Slim design fits most bottle/cup holders Fits in most standard bike cages Rounded corners are easy to clean with no hard angles where dirt, germs or bacteria can stick Stainless steel threads Fits large ice cubes BPA-free polypropylene (pp#5) caps