The Klean Kanteen 64oz Kanteen Stainless Steel Water Bottle (Wide) was created for two simple reasons: for a mammoth, half gallon bottle for transporting and storing water and other drinks, and for the same size as a growler for one of our other favorite beverages, good beer. Think of it as a filling station that's easy to handle and pour from. On river trips, a sailboat, an all-day picnic or even car camping, use your 64oz Klean Kanteen Wide instead of dealing with big, unwieldy plastic jugs. Like every Klean Kanteen the 64oz wide-mouth bottle is made from 18/8, food-grade stainless steel so it doesn't need to be lined and will never retain or leach flavors. The extra wide opening is more than 2 inches in diameter for quick filling, pouring and cleaning, and the universal thread design fits with standard backcountry water filters. It comes with a Stainless Loop Cap that clips onto a Kanteen S-Biner. Or you can opt for the stylish and functional Flip D-Ring Cap, available as an accessory. Both caps are 100 stainless steel on the inside, so your drinks never touch plastic. In fact, the only plastic on the Klean Kanteen Wide is on the outside of the cap; and of course it's BPA-free polypropylene (pp#5). No matter how many times you refill it, no matter what you put into it, the drinks in your Klean Kanteen will stay fresh and tasty.