Klean Kanteen Wide Mouth Water Bottle - 2023 edition

The wide mouth opening on the Klean Kanteen Wide Water Bottle range is 5.4cm. There are times when having a wider mouth on a bottle can be an advantage. Since the bottle was designed for adventure and active people, the opening is generous enough to fill the bottle with ice cubes for chilled drink, to put a water filter inside (either a charcoal stick or adventure sport specific filters for use when you're taking water from a stream) and even use it for some food and snacks. They're easier to clean when they're wide too.

They make a really good bottle to mix protein powders and shakes in for the gym, with plenty of room to get a heaped spoon in through the opening without powder going everywhere.

The non-insulated Klean Kanteen Wide Mouth Bottles are available in 3 different sizes. The Klean Kanteen bottles are sized in oz. From left to right in the image at the top of the page you have 64oz (which is just under 2 litres), 40oz (which is just over a litre) and 27oz (which is 800ml).

If you're wondering just how big they are in real life, we always put the diameter measurements of bottles on our website so you can see if they fit in your car cup holder. We do sell a universal car cup holder now that will take any of these bottles, even the biggest one.

27oz bottle is 70mm in diameter
40oz bottle is 89mm in diameter
64oz bottle is 110mm in diameter

There are two very distinct differences. The first one is that the wide mouth bottle is a single wall bottle. The TKWide is an insulated water bottle, which means they can retain cold and heat and they're also twice as heavy when empty.
The threads and the lids are different, so they are not interchangeable. The wide mouth have the thread on the outside of the bottle, the TKWide has the thread on the inside. The wide mouth opening on the TKWide is also wider at 6.6cm (the wide mouth is only 5.4cm).