UniWey Spill Proof and Splash Resistant Tumbler Lid, 2 Pack, 20 oz

I bought it for my ozarka 20oz vac.insulated tumbler and it fits good.Of course this is not screw in lid so that be careful of creasing of internal pressure.Even you put cold drink in it, as it warm up, internal pressure will be increased andsuddunly the lid willl pop up.it won't leak while it fits better, you can shake the tumble no problem but if you leave itin your bag is not recommended at all.If you put hot drink in tumbler and put the lid, of course soon the lid will pop up if you close the mouse cover.other than such cases, this works great.

Would be 5 stars, but it fits my Grid Gear just a bit loose. Seems to be water tight, but the cap comes off a little too easy and if I jarred it or shook it lightly upside down, I believe the cap would come off, but again, that's for the Grid Gear tumbler. The cap that comes with the tumbler fits tighter and I don't think it would come off. Otherwise, it flips up well and the silicone seal keeps liquids from leaking out, as compared to the slide top that came with the tumbler. the slide lid leaks if it falls over. I'm lazy and I like the way the slide works for most drinking at home, but if I take it in the car, I'll switch it out with this one. It just takes a little more effort to open the flip lid.....makes sense that the flip tab would be tight....water tight.

These are pretty good! Worked really well with my Yeti tumbler. But, like everyone else has said, the lid doesn't go all the way back, so you're constantly bumping your nose on the cap when you're drinking. Quite a bit of a design flaw in my opinion. But it does make a great seal and keeps the drinks from spilling.

Packaged well and lids is soill proof. Problem is the lid doesn't open all the way flat so it hits your nose when you try to drink. Once your coffee if half empty you have to tilt your head back to drink it because the lid is on your nose and you can't tilt the cup up any higher...

Water tight seal which is most important. Took 1star because it's is difficult to put on and the flap that covers the opening doesn't snap out of the way.

It works great, good seal for Yeti, took off a star because the lid does not fold back far enough and it will touch your nose when you take a swig. but overall very good product..

Drops of your drink are on the flap when you open it and it gets on your face, plus it doesn't open far enough, it makes you tilt your head back for a drink.

Love them