SUNWILLLid 20oz Travel Tumblers Only, Spill Proof Lid, Splash Resistant Silicone Sliding Covers Replacement 2 Pack, Straw Friendly, BPA Free

No issues with this replacement lid and its inexpensive. Fits great, has a good tight seal to keep tea/coffee hot within tunbler and has been working great for 6+ months now. No issues with daily dishwasher and usage.

Definitely leak proof for cold drinks. Using with a tumble from Walmart - Ozark Trail 20 oz double wall tumbler. Fits perfectly! I put the lid on and open/close the slider a couple of times, turn cup upside down in sink to test for leaking and no leaks! I've been using for a while and it works exactly as advertised. Even gave one to my brother-in-law and he loves it. I would definitely recommend and would definitely buy again. I did notice that when I washed it and didn't dry the rubber ring sufficiently and put it in a closed cabinet, the ring got moldy. That was my fault though. When I've left it out to air-dry I've had no problems. Not sure about how leak proof it is for hot beverages. Haven't tried that yet.

I purchased these for my sunwill cup. It fits perfectly.

The one on the left is a year or so old and the one on the right is a month old. Have had the cups for 3 years and the original slide lids lasted 3 or 4 months. The gave us replacements and they did the same thing. They developed these after the issues on the first set. They discolor and get some grunge under the lid. That’s hard to get out. Although these hold up just fine. They need to develop a lid where the slide runs over a textured slot and the buildup may be less. The issue on the left lid does not bother me, but does my wife. I scratched some slots on the back of the slide and the buildup is far less than what it used to be to be. A design problem possibly made better. The silicone gasket will discolor. A better lid than their old design from 3 years ago.

Why did you pick this product vs others?:Perfect replacement for my Sunwill coffee mug. Great price.

Great product but these extra lids should come with the cups when you purchase them. You can always use an extra lid or two

Great Lids for a Great Tumbler

Cracked the sliding cover trying to remove it for cleaning so needed to purchase a new lid. Unfortunately only 2/box are available.You can't buy just one. Wouldn't have needed them if Sunwill lids weren't so difficult to clean. You need to pry the slider out of the lid to get at it the crud underneath.