2 Pack Flip Straw Leak Proof Lid for Stanley 40 oz Tumbler Quencher - Reusable Spill Proof Lid Top Cover Stanley 40oz Cup Accessories - Replacement of Leaking Original Stanley Lids - Beige

Great lids! Amazing quality and spill proof! Fits 40oz stanley and generic 40oz tumbler perfectly! The lids have great sturdy side grip. Work great! Colors pair perfectly!

fit my Stanley cup perfect (the color even matches my cup 100%) Makes my drink leak proof, I can just toss it into my bag or lug it around the gym without worrying its going to leak. I dont think I'll go back to the basic Stanly lid now!

I had issues at first with 1 of the two straws, but after reaching out to the seller (who replaced without issue!) the replacements both work exactly as described! Thanks so much! I'm so happy to have something that doesn't leak on my Stanley.

I bought these because I love the idea of having a flip-top lid with my Stanley. However, these lids would only line up with the handle of my Stanley, no matter how many times I would put them on, making it a little bit more difficult to pick up and drink. Plus, when the straws were opened the lids made a lot of noise taking a drink.

This is a great product!! I have always had water flasks and bottles and love the Stanley quality but absolutely hated the straw that always stuck out and even more if I had to slurp from the lid without a straw. Result: I rarely took the flask with me while on the move or walking. This cool and gorgeous lid prevents any leaks and is totally safe to put in a bag or to carry on a strap while moving. I was skeptical at first so I filled up the bottle and gave it a real good shake with ice and the whole nine yards.... It didn't budge!! The top drinking flippy thing itself opens easily, can come apart from the lid to deep clean when necessary, the straw is good quality. Everything is perfect and I can finally take my water flask with me wherever I go! Buy this (you get 2!!), you won't regret it. Best money spent in a long while!

Good Lid, but Requires Effort to UseI received the 2 Pack Flip Straw Leak Proof Lid for my Stanley 40 oz Tumbler and it seems to be a good quality product. The leak-proof claim appears accurate, which is a big plus for preventing spills.However, I did find two main drawbacks. First, the lid can be quite hard to open; it takes a significant amount of force to flip up the straw. Second, once open, drinking from it also requires a bit of effort. You really have to suck to get the liquid out.Overall, it's a functional lid that does what it promises in terms of leak prevention, but be prepared for a bit of a workout when opening and drinking.

So glad I found these lids! They fit perfect on my Stanley’s with no leaking. I have replaced all our lids with these lids!

I really wanted to like this product. The lid was perfect and it is leak proof. However, I am not sure what is going with the straw, but the water uptake is not good and it's only air and it's loud. I've seen reviews that there are instructions to fix this issue, but it is not posted anywhere publicly so I will be returning this product.