30 oz Tumbler Lids,Replacement Spill Proof Splash Resistant Slider Mug Topper for Yeti Rambler and More Coffee Mugs,Straw Friendly(2 Pack)

For now this is going to be a 5.Before buying I carefully measured diameter of my cup and searched/winnowed on that basis (.320). Reading the lower ratings indicated accumulation of crud under the arched slider as a drawback . After watching the video provided with the amazon listing which showed how to pop off the slider, I figured I'd take a chance. First thing I did on arrival was to put it in my cup. After pushing it down it tended to want to slide back out. I realized this was the compressed cushion of air caused by a GOOD seal. I opened the slider and it slid into place and stayed. Next I again watched the video and subsequently popped off the slider - not a lot of effort, making it easy to clean. While I was at it I removed and replaced both seals. Slider popped into place just like in the video. Finally I filled cup with water, placed lid, and closed slider and inverted - not a drop. I also find the lip radius very nice compared to prior, more-cornered lip on my previous lid. I may/not be back to adjust this rating depending life/use considerations. For now, I'm very pleased

The fit of these lids on my cups are great. They don't leak at all, it's a perfect fit.

These are great. I broke the top of a brand new coffee tumbler. I was so excited to find a replacement. They fit perfectly!

We bought these to replace a cracked lid on a travel mug. They fit perfectly and don’t leak. The only thing that stopped me from giving 5 stars is that the rubber pieces are incredibly hard to remove.

Fit well on thermos type tumblerThat needed replacement lid

doesn’t spillnot so easy to cleanthe video makes it look like everything pops apart easily … i am not finding that to be true.lots of little pieces.

Nice, I didn't think it was going to fit tightly. But it fits perfectly. Compared to what came with the cup, it's a better quality lid.

It didn't work out for me. I didn't bother returning it.

Please make a version for the 42 oz Yeti Rambler.These lids are perfect! Yeti could take a lesson from this company.

Arrived, as promised, and received an email in advance of receiving advising to contact the seller if the lid did not fit properly due to slight variances in the manufacturing process, which was helpful. No need, though - the lid fit my tumbler perfectly!

Tight fit for my mug that had the wrong lid, pricey for one, but a two pack is well priced.

With the top edge of the mug being tapered, it was difficult to know if I was taking my measurement in the exact spot as the specs showed. I took a chance that it was close enough, and the lid fits perfectly, nice & snug. It appears to be great quality with the built in rubber seals. Thank-you!

I have a custom made tumbler for my son, but don't know the brand. Order these after he forgot to wash the lid and it got gross. They fit perfectly. Just wish they were easier to clean under the slider