2Sets Silicone Spill Proof Stopper for Stanley 40/30 oz Quencher H2.0 Tumbler with Handle for Stanley Cup Accessories Including 2 Straw Cover Cap, 2 Round Leak Stopper 2 Square Spill Stoppers

these are amazing! the bottom seal that goes in the straw space is a pain to put in but once it’s in it is seriously spill proof! make sure you put the cylinder piece on or it will spill. i love these and they wash in the dishwasher nicely. they did not change shape or stretch out after the dry cycle either. would recommend! had them over a year and they still work perfectly after multiple washes!

I recently got a silicone cover for my Stanley bottle to keep it safe. However, it covers the whole bottle, so I can't show off the beautiful color. My daughter gifted me this Stanley for my birthday, so I wanted to keep it safe. To match mine, I got her a beautiful rose-colored Stanley for my daughter, and I was surprised by the low price of the matching silicone cover. It was totally worth it because it kept her drink secure, even in the chaos of high school. The silicone cover prevented the drink from spilling when her bottle got pushed over in her hectic school bag. She absolutely loves it because she can show it off and stay hydrated in the Florida heat with the cute flower straw cover. Plus, it's helped her drink more water throughout the day. I'm happy that the silicone covers are easy to clean and come in handy pairs, and the extra accessories don't make her feel childish in high school and I do not have to hear the dreadful sound of the metal cup when she puts it down after a sip.Essential need when purchasing a Stanley.

Nice

I have been hemming and hawing over a Stanley Tumbler for months. Then my son made off with my Klean Kanteen for school this year and I finally took the plunge. My biggest concern was leaking and carrying the tumbler in my bag to work, so I ordered these silicone gaskets simultaneously. They work really well.Here's what you need to know.There are three parts: one for plugging the straw, one for covering the connections joint inside the lid, and one for the drinking hole that the straw goes through. If you don't use all three, the tumbler will still leak. The drinking hole gasket/plug thing is a bit tricky to install and seems like it won't fit, but it does.Here's the rub. To install the drinking hole plug/gasket you MUST shift the tumbler's hole cover perpendicular to the drinking hole and it stays there for as long as you have the gaskets installed. The thickness and shape of the plug prevents the original Stanley cover from moving. This is not a giant deal, just something to know. Additionally, you must install the straw and straw cover because there's no seal on the drinking hole plug the way there is on the Stanley lid (but it doesn't leak once the straw and cover are I stalled either, so there's that). Finally, you'll need to use a sharp knife and make the breathing hole in the inside the lid cover a little longer or drinking makes a vacuum inside the cup and it becomes impossible to suck liquid out of the straw.All that being said, theses gaskets work really well and prevent the cup from leaking which makes it a vastly more useful product than the leaky cover that comes with the tumbler itself. Though I’m not going to trust the tiny straw gasket in my backpack with my laptop. It’s sturdy and stays on well, I just don’t think it can take inside-my-backpack commuting action.

This is good quality and makes it so my Stanley doesn’t leak. It’s easy to drink with, fits well and is a good design.

It just doesn’t work or maybe not compatible with my Stanley

Works! The rectangular piece is hard to get on, but trust me, it fits.

Fit nice!!! Works nice!