Spill Proof Stopper Silicone,Stanley Cup Spill Proof Stoppers 30oz 40oz Tumbler 2.0 with 2 Straw Cover Sets,2 Round Leak Stoppers and 2 Square Spill Stoppers,Anti-dust Stanley Cup Accessories

These are perfect and they work. They work a little too good and I can't grab them out with my small fingers. I make my boyfriend take them out before washing. But this thing is seriously waterproof. If you drop it in the car and it rolls on the ground, it ain't spilling! Carrying way too much and your drink is tilted to the side? It ain't spilling! Only minor nuisance is when you're washing the little pieces and you might not find where you put them to dry. For the longest time I could not figure out where that big circle piece goes but it goes in the middle on the bottom of the lid.

Don’t bother. The inside stopper falls off. The insert for the straw falls in.

Arrived quickly, and worked well! Yay, no spills!!

Not good

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