Review on Klean Kanteen Resistant Bottle Silicone by Alberto Brewster

We first bought some of these for our old non-insulated Klean Kanteen bottles. We've since bought a couple of Glacier Point Metal Insult Water Bottles, which we prefer from Klean Kanteens because they stay cold much longer and don't "sweat". But the Glacier Point bottles had a really crappy sports cap that's made out of brittle plastic and breaks easily (we smashed two of them). The Klean Kanteen sports cap comes to the rescue as it fits perfectly on Glacier Point bottles and is much more durable. Put the bottle in the bag. Our 6 year old came home from school a couple of times with a very wet backpack because he hadn't pushed the rubber ring all the way down. But I believe this is user error, not design error.