LUOLAO Silicone Spill Stopper Set of 2, Compatible with Yeti 16/20/26/30oz, Tumbler Accessories, Including 2 Straw Cover Cap, 2 Spill Stopper

these fixed the only thing i absolutely hated about my reduce brand 50oz cup! i didn’t really read too many reviews before purchase so when the water shot up in my face i was a bit surprised but i saw this little divot in the lid (first pic without stopper) i decided to risk the $6 and cut into one just to give the tiniest amount of breathing room for it to not squeak or erupt when i’m filling it up in the office and that did the trick! the straw still stays completely in place and has a snug fit and virtually no leaks i knocked it over on a grey shirt to try and show that lol. i saw people drilling holes into their lids too which is another way they got it to not be crazy air tight where it does those things but luckily for me it already had the little pre etched bit. wanted to put this out there for anyone else needing the quick fix!

Great product, keeps liquid inside if you use it correctly. Also keeps air in, so when you push lid on be careful of "fountain" coming up through straw. But I use it every day and works great!

They are sturdy and keeps the dirt and bugs out!

These are perfect! Comes with 2 straw toppers and 2 seals for the straw hole. I tried to use those but the vacuum on my yeti lid is too strong already so that just made it hard to pull water up the straw so I took it out. Would be useful with my fake yeti from pop shelf though

Fits perfectly on my Yeti straw. I’ve been using them for about a year now and they still look brand new. The sealing ring does make it leak proof.