Klean Kanteen is definitely leak-proof. It would be awesome if they added a cool, soft handle for your hands. They’re doing a great jobs with adding different, cute colors. I love a cute waterbottle!

Excellent sturdy solid Kleen Kanteen is so well made I have some for over 20 years! Easy to wash, solid built tops that don’t leak. I find water stays pretty cold even though it’s not insulated. Handy and doesn’t make water taste weird.

This bottle lasted me years. I used it all four years of high school. It never leaked and if my drink was cold the ice lasted all day. If my drink was hot, when i got home it was still hot.