CocoStraw 2 Pack Replacement Rubber Gasket Seal Ring 30 oz Tumbler Vacuum Stainless Steel Cup Flex Spare Yeti Ozark Trail Rocky Mountain Top Lid CocoStraw Brand (2 Pack Gaskets - 30oz)

Works like a charm as long as you put it on right! LOL I have had a Yeti aluminum tumbler for approximately 8 years. I have had ice in it when I go to bed and there will still be ice in it when I wake up! Well the gasket finally quit on me. I would be lucky if the ice lasted half a day! I ordered these ring replacements and kept my fingers crossed! Put it on and the first couple of days I wasn't very happy...so I thought "hmmm.. Could I have it on wrong?" So I took it off and turned it inside out and put it back on and WAH LAH! works great! Seemed a little pricey at $5 plus dollars for 2, but hey! If it lasts another 8 years I am more than happy with this purchase!!

Fit my Rocky mountain tumbler but seemed looser than the original gaskets. No leaks so far andthe lid isn't loose at all.

It fits and the straws are perfect

Just what I needed so I’m not holding my yeti tumbler in my hand , it’s much easier to hold and I think the ice will last longer too

The opening in the center for the straw is a really nice change on these cup lids. I tend to get mine tipped a lot while driving & these lids ensure nothing spills out.