Stanley 2 Pack Flip Straw Lid - Leak Proof, Reusable Spill Proof for 40 OZ Tumbler (White)

Love these! They work great! My bag always flips over when my cups in it and there is no leak. One did break when my cup fell off a table so I love that there are two!

These lids are cute but 3 stars bc the rubber ring on the rim of the lid removes too easily and in the 2nd day of use, my water bottle dropped and the lids cracked which I get is a risk but didn’t expect to happen so soon. Luckily it was a 2 pack. Mostly use these lids for my Stanley at home.

As describ3ed; works great on Stanley 40 oz

I don't understand this Stanley tumbler craze, but nevertheless my daughter got one as a gift. She was so excited. But those tumblers aren't great for spill avoidance when using a straw. Enter these lids with flip down tops. These got me a lot of smiles and a look that said, "yes dad, this is cool". Not something most teenagers will admit to...These lids feel solid. They seal pretty well, but these will leak ever so slighly if left on their side or upside down. But it takes a bit to get to that point. I feel these do what they should, and add a little flare as well. These are a must for use in cars anyway...

These amazing little gadgets work so well. If you have a Stanley and prefer to use a flip straw, these are for you. The most amazing part is that they are leak-proof, so very cool.