Leak and Spill Proof Lid for Yeti, RTIC and Other 30 oz Stainless Steel Tumblers

This lid does not leak at all. I can fill it with ice water and shake it while holding the cup upside down without a drop of leakage. One very small downside is that the flip up cover does not fold back flush and tends to hit my nose when I take a drink, maybe I just have a big nose:)

This lid works well. However, the opening is not quite large enough for my 11" plastic straws. I have to force it through the hole, and it's pinched at that. I would have given 5 stars otherwise.

Just got mine in today was looking forward to trying it out. I have a 30oz RTIC Tumbler and it says its compatible. it doesnt fit snug nor does it stay level on the rim of my cup and my cup is brand new no dents nothing. So I dry the walls where the rubber seal will grip onto to help with the seal of the spillage and as I turn my cup upside down water in cup 1/3 not even half full and the lid begins to hubcap itself on one side of my tumbler. This will do for just being at home not fir travel. I paid 10 bucks and change for this lid and the hassle to return this is not worth it. I do not recommend this item at all. Not even for 2 bucks.

I don't have any cup holders in my car and spill water from my 30 ounce yeti cup about once a week. I finally got tired of it and ordered this lid. The lid holds fluid in perfectly. I can hold my cup upside down and it doesn't spill a drop. This is a great product.

Works great! You have to have the pop top in the open position to put it on. If not the air pressure from the cup keep the lid from staying on. I ALMOST didn't figure it out and would've returned it. They should put that in the description or in some instructions with delivery. Also without a tiny hole in the opposite side of the top, the water flow is uneven when you try to drink water fast. Lastly the pop top doesn't go back all the way so it hits your nose when you drink from it. Overall I like it and would buy it again, but the product isn't without some flaws. If you looked here to know if you should buy it or not, the answer is buy it..

When stopper is closed it keeps hot drinks hot for hours. When the stopper is open and the cup is half full or less, the stopper hits your nose. It should open all the way and lock to the rim on the other side.

Excellent lid works really well. It seals so well if you don't pop the sealed drinking side you can't take the top out and off.

Needs product dimensions, not the box it comes in, the lid I got was to small for a 30 Oz bison tumbler. The bison lid is 3 3/4 at the sealing area vs 3 9/16 for this lid. It does look like a good lid none the less though