These things are a game changer - make sure you are purchasing the correct set for your style cup. My daughter and I both have the 2.0 version 40oz. We use them for sports and for tournament travel. My daughter had problems as her cup kept getting knocked over by volleyballs and her cup would spill. I had issues as I would place the cups under my seat at tournaments and then continuously knock them over, thus spilling the water. These spill stoppers are a game changer and prevent leaks! Here are my notes from using them as I almost gave up on them. 1. They do seem expensive for what they are but, I get it (shipping and convenience). However, I do like the fact that they include two sets which makes it a good value in my book. 2. They are advertised as BPA free! 3. The sort of rectangular gasket for the straw hole can be a bit hard to get on and almost doesn't seem like it will fit. If you keep working it, it does go on and fit our cups perfectly. One of ours went on super easy, the second one we had to just keep working around the edges with our fingers to get it to go into place. 4. Problems with suction? I had them and was about to give up on this product. However, my daughter said hers was working perfectly which made me investigate a little further. I was having issues with the center gasket round piece. The first time I used it, it fell off into my water. Luckily, it is not big enough to suck up through the straw. After placing it back on suction was awful so I just removed it completely. However, this piece has a small x cut in the center. I found that the rubber was not cut all the way through. I used my finger to push on the area and open it up. After doing this the suction is back to normal and this product is working great! No more spills - my daughter and I are both very pleased! Read more
Works so great and now my Stanley doesn’t leak! Read more
You have to buy the correct one for your cup. There’s a 2.0 and a 1.0 version. Once you have the right one, this works perfectly! It made my cup completely leak proof! I LOVE IT! Now i don’t have to worry about spilling anything if my cup gets knocked over by kids or dogs and I can take it with me on the go in my tote without any worries of it leaking. Buy it! No regrets here. It’s amazing!! Read more
I had an issue with my order not being delivered to me as the tracking stated. After I contacted the seller, they offered to reship it, and I received my order much quicker than my initial first order. I believe the problem was the local mail handler. The items were packaged well and works super with my Stanley tumbler. No leaks!!! Great product. Read more
Works so well! Absolutely worth the price. It's not a Brumate, so the drink will spill if left turned over for a prolonged time. But! It definitely won't spill if you accidentally know it over. Highly recommend!! Read more
get this settttt omgggg! i’ve had this for over a year and i wash it keep it on my stanley alwaysss. it actually stops my stanley from spilling when it tips over, i drop it, or lay it down unless it’s completely filled up to the brim or above half i would guess which i’ve noticed. i’ve gotten used to all the little pieces and it’s not a real hassle. i like the straw cap the most i make sure it’s always on which makes me feel less nasty when bringing my cup everywhere. i will say that the top part/the cap that goes in the straw has turned yellow and stays yellow after all the washes over the year which idkk maybe that makes sense but it doesn’t look cute. overall it’s a great buy. Read more
Love it, this thing literally keeps my water from spilling if my Stanley falls or is upside down! Read more
Placed these on our Stanley Travel mug and they did not keep the water from spilling when knocked over. Read more
