Klean Kanteen Flat Cap/Polypro

I purchased several stainless steel caps. The adhesive from the labels wouldn't come off, so I soaked them in soapy water. The expensive lids now have water trapped inside where bacteria can breed. I can't get the water out; the caps are unsafe to use, and I'm out the money.

I purchased the Klean Kanteen bottles as an alternative to my deteriating lexan bottles. I am impressed with the bottles and the sports caps that they came with. I purchased the Stainless steel loop cap so that I can clip the bottle to my backpack when hiking and am very happy with it. The threads fit much better and far more secure than the poly loop cap threads and it also covers a bit of the outside of the rim to. (the poly loop doesn't)

In theory I like the idea of a metal cap that prevents contact between the water and the plastic, I've had a terrible experience with the stainless loop cap. I have the 40oz bottle and apparently the adhesive cannot handle the weight--the loop actually separated from the rest of the cap, sending my water bottle crashing onto concrete, damaging the bottle in the process. I ordered a second one, stopped carrying it by the loop all the time, but it still came separated. I'm using the poly loop now and haven't had this problem.

the cap fits well and does the trick. too bad it doesn't come standard with the bottle.

The thing fits but it looks like it was not ment to be on the bottle. Def aftermarket and NOT klean kanteen OEM. I know they are hard to find but I would reccomend you get one from klean kanteen.