Push Pull Replacement Caps for 28 mm Water Bottle - 40 Pcs Colorful Flip Cover Plastic Replacement Lids for Soda and Sport Water Bottle - Compatible for Indoor or Outdoor Sports

Perfect for Aquafina. Other water bottle I tried it would not fit. But I asked & found it does well with Aquafina, also with Coke! Would have appreciated knowing that ahead of time.

I got these as it dawned on me that I could avoid wasting money on a single bottle with a flip-lid and just by lids in bulk (to go on my bulk, 1L bottles). I didn't like the anti-spill thing, but if you get one of those paring knives (short knife with flat, rigid blade) and carefully pry out the ring holding the rubber flap, then the whole mechanism comes out. I originally didn't notice the ring until I accidentally hit it instead of the flap, so that was a nice find vs me trying to surgically slice out the silicone flap. I do wish that they would be a bit easier to open / close though, but I guess that's better than them flying open on their own. Even with the flap removed, they don't leak when closed BTW.

And if tips, the liquid stays inside. To use you must either suck like it's a straw or squeeze the bottle.

these are cheaply made and do not close completely

Didn't fit ice mountain water bottles

Handy

I do not like these caps - box these came in was all busted up - additionally there was a hole in the carver of the shipping department. there is no telling how many fell out in transit…I returned them, but the next day I found one that had fallen out in the driveway. I tried it - and realized I got lucky. the plastic in the top doesn’t seem like a big deal, but in reality it greatly reduces the amount of water you get in your mouth and it also impedes air going back into the bottle. I end up taking the lid off so often the advantages of using a sport top are completely lost. I did notice that this might be a good top for little kids (sippy cup age). you can spill water but nothing like the alternative.

I have tried and used these on a CokeBottle and Aquafina water bottle with no issues. Did try one that I can’t recall brand and it did not fit. But have used consistently on the Aquafina bottle.