Silicone Spill Stopper Set Compatible with Stanley Cup 2.0 30oz & 40oz with Straw Cover (Set of 2, Mist)

Shipping was quick, received a day earlier than expected. One star removed due to a square stopper mouth piece missing, though that was to be expected after reading that in many of the reviews. Very quick and easy to install, simple instructions included but not necessary and came in a nice plastic container to keep the extra parts. The color match is impeccable, you can barely tell they're aftermarket prices. I had about 20oz of water in my Stanley when I installed these, and immediately turned the cup upside down over the sink for 30 seconds, and repeated a few times and found no leakage. Removed star was added back for product doing what it says it should. I handwashed and did not run through the dishwasher and I do not use my Stanly for hot liquids so I cannot answer for temperature retention. I have only just installed so I also cannot answer for durability, but they seem like they will hold up - even the straw cover seems like it will last. Sizing is perfect, the square stopper mouth piece is a little oversized, but that is how it should be and is still easy to install. 10/10 would order again if I purchased another Stanley.

This works great on my 40oz Stanley, no leaks whatsoever. Instructions are great and it’s really easy to put on. I ordered it in another color for my other Stanley.

Ever since I got my Stanley I had the problem of it constantly spilling. I can't put it in my backpack because it can't fit in the side and if I put it into the actual backpack it might mess up my work so I had to keep it out of my backpack and it would constantly spill in class or when I would walk with it and it was extremely annoying. I got this to aid with that problem and it works really well. I can completely turn the cup over and not a single drop comes out. The stopper might look too big for the whole but trust me it goes in there and it's pretty snug. My straw stays completely still too. The only thing I don't like about it is that they're isn't any designs available for the straw topper but the good thing is that I can take my existing straw topper and use hot glue to put the design on. Would definitely recommend and would definitely buy again if needed.

I adore these stoppers. They fix what the premium cup “brand” couldn’t or wouldn’t. Stops all leaks. Fit well. Works well. Nice color. They will create a much stronger suction when drinking from the straw. I use a silicone straw and will gently press the straw away from the seal wall in order to let a small amount of air flow through to help offset the internal pressure. These seals are awesome.

I got the Fluted Wisteria Shine cup for Christmas. It doesn't keep anything cold. My husband said it was because of the holes in the cup. I bought these hoping they would help. They don't. The cup isn't as described. It's a pretty cup but not very useful :(

My Stanley didn’t leak any more just great

It only came with one set, not 2. That was the downfall. The one works great tho

Best brand I’ve bought so far. Definitely worth it. Will be buying again

Sadece içerken hava akmadığı için pipeti eğerek içmeye çalışıyorum ama gayet koruyucu dökülmüyor

No se ajusta al tamaño del termo para el que supuestamente fue disrñado

جيد

The cover serve it's purpose. No more leakage.

İş görüyor, gayet güzel.