Review on Ultimate 8-Piece Set: Yeti Straw Lid, No Leak Sliding Closure, 100% Spill Proof - Fits Yeti Rambler, Ozark Trail Cup & More Stainless Steel Mugs by Edward Mcnamara

Good product for the price. I'm still debating whether I like these lids. The sliding lid is hermetically sealed; however it is a bit difficult to put on. You have to release steam from hot drinks several times before the lid is tight. To completely remove the lid, you must first release steam by sliding the lid. Soap and water will remain when cleaning the sliding lid, it will take a few seconds to completely remove. I like this because my Yeti's lid leaks and I don't get spilled hot drinks on me, which is a plus. But complex operation can be annoying, especially when you're in a hurry.