AIERSA 3Pcs Spill Stopper for YETI Cup Straw Lid, and 3Pcs Straw Cover Cap Toppers Suitable for Yeti Cup Accessories for 20, 16, 24, 25, 26, 35,42 oz Tumbler, Silicone, Leak Proof

Not a fan of spending large sums of cash on mugs but VERY glad I invested in this one!!! Perfect size so I don't have to refill as often, not crazy heavy, my drinks STAY cold (still had ice in the mug the next day), fits in my car cup holder with ease and the lid twists on/off versus having to be pried off. Love this!!

These are absolutely perfect for my 35oz yeti tumbler and straw. Exactly as advertised.The person saying it didn't work was doing it wrong. These fit perfectly and are awesome!It isn't 100% leak proof because the little plug has a tiny divet in it to let air in while you suck out the water, otherwise you would create a vacuum. This is good design.Would recommend!

1st I'd like to point out that these (BOTH PIECES) 100% fit & work 100% effectively on the YETI- RAMBLER- STRAW LID CUPS! The stopper that fits in the hole were the straw goes is snug, so snug that no liquid will EVER leak out lol & it also is so snug it adds a better vacuum seal to lid itself! The straw covers are just as FANTASTIC!!! They aren't flimsy or cheaply made at all! I am ordering 3 more sets for myself, my fiance and the kiddos! EXCELLENT ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ PRODUCT & EXCELLENT PRICE!!

These only work if your lid has a breather hole.

No more spills, snug fit. But don't put cover on without the top stopper on also.Beverage will squirt up. Otherwise great!!