Klean Kanteen Stainless Steel Bottle with Loop Cap (Channel Island w/ Sport Cap) Bundle of 2 Items: 40 Ounce Classic Klean Kanteen with Loop Cap + Sport Bottle Cap Made of 18/8 food grade stainless steel, no liner needed Doesn't retain or impart flavors for a clean, fresh drink every time Rounded corners are easy to clean with no hard angles where dirt, germs or other bacteria can stick The loop cap is made from BPA-free polypropylene and can be clipped onto backpacks, bags or belt loops for hydration on-the-go