30 oz Pack of 4 Replacement Lids for Yti Tumblers - 3.7 Inch Diameter - Spill Proof Lids Silicon Sliding Covers, Fits Yti Tumblers, Hydro Flask, Reusable No Leak Design, Splash Resistant 30 oz Mug

Exact fit , these work better than the originals. Fit all the different type 30oz tumblers I have.

Good Morning World,I love my RTIC 30oz Tumbler, but the OG lids have an open mouth slot. I am a klutz. I can't wear white. Ok that last one has many reasons, but anyway, I tried the flip-top lids, but they have 3 problems. 1. The Flip-top lids are not anywhere near spill-proof. They are only spill-resistant. 2. The flip-tops are brittle and a simply short drop will break the clip on the flip-top. 3. The flip-tops never fold flat and bop your nose when you drink.So I found these lids from C&Berg. The lids have one key difference from all the others out there: The closure slides! Ah! No more pushing the flip-top against my nose. And the best part is that the closure gets "tighter" as you slide it closed. This simple, but smart, design feature ensures the lid is as close to 100% spill PROOF as you can get.Caveat on the prior statement: I noticed that after you close the lid and tilt the tumbler, there would sometimes (but rarely) be a very slow leak. To fix this, simply slide the closure back and forth a couple of times to get rid of any residual liquid surface adhesion off the silicone pad. No leaks.Ok. So a couple of things after a month of usage.First, there is really only one slight Achilles heel. The gaskets are a little soft and/or the ridges are too thin or pliant, or...something. After many usages, the lids come off easier and the gaskets seem like they could be just a tad thicker. I've already communicated this to their customer support. Again, they don't leak, the gaskets could just be "better". So instead, I replaced the C&Berg gaskets and replaced them with the OG RTIC gaskets and a the flip-top lids I had purchased previously. Now they are 100% perfect.My test for the gaskets was to pour the tumbler full of hot coffee and some creamer, close the lid tight and shake. A tight gasket will not spray liquid under pressure. The OG gaskets and the flip-top gaskets don't leak, but the C&Berg gaskets do. Again, it's a test that will not often be an issue in the real world. A stronger gasket would just make a great product perfect.Second, the sliding part is a piece of hollow plastic with some silicone pads. At first glance, it might appear hard to clean as the slide doesn't appear to come off. Liquid and condensation gets into that area and some residue, pushed around by the silicon pad, also gets underneath. While you can put it under running water and water can get into (and drain out from) the hollow area, I was worried about long-term usage and the possibility of mold or other growth in that area. BUT it is easy to clean. The easy? Use a towel (so your finger does slide) and press on the side of the sliding closure and pull slightly away from the lid and voilà! It comes off completely so it's easy to clean. Another way to get it off? Push firmly on the bottom of the lid against the silicone pad. See the latter procedure in this quick YouTube video: https://www.youtube.com/watch?v=4jWyx_OVuk8Third, not a concern for me but it could be for others is that the silicone on the slider is easily stained by coffee. The stains have no effect on the cleanliness of the lid. If you still are concerned, soak the lids in 3% hydrogen peroxide mixture made by diluting 2 1/2 tablespoons of bleach in 2 cups of water. Either will bring the silicone pads back to their original white.I heartily recommend this lid as a replacement for any 20-30oz RTIC or Yeti or similar Tumbler (even the generic ones at BB&B largely use the same lids).The price is good and it took me many failed purchases to find this product. Don't make the same mistake I did. Buy THIS one. You won't be sorry!

These lids are well made, easy to use, and don’t leak. What more can you ask for?

I soon learned I need the size skinny tumbler lid. These still came quickly, the price, size & quality was good. I just can't use them because of the size.

The seal is awesome. It is nearly impossible to put the lid on with the slide cover closed due to how tight the seal is. never spills on the golf course. i'll be ordering these again so i have them when these wear out in a couple of years.

These are nice and snug. I like the way it dispenses.

The lid is fine but because there's no aeration hole, the flow through the drink hole doesn't flow. I drilled my own hole into the lid which was simple but still... you would think they would've designed it better.

These are working well. The little push tab helps prevent spills but it sometimes comes off in the dishwasher. It goes back on easy enough so not a big issue for me. They can be hard to get off of the mug but that’s way better than falling off easily. So I gave it a five on “comes off easily” even though it really doesn’t. Fantastic replacement lids for the price!

Tapas perfectas para el Yeti. Recomendable totalmente.