I'll admit I had my doubts, but I am very impressed with these rubber gaskets. They fit on my 30 oz The Beast cover perfectly; nice tight and it does not shift/move around when I close the lid. Very nice, just like when my tumbler was brand new with no leaks!! I am ordering 2 more just in case this seller stops using the same exact manufacturer in the future.
Rating:
[5 of 5 Stars!]