AILUXUAN Tumbler Lids Spillproof 30 Oz,2 Replacement Lids for 30 oz Stainless Steel Tumbler Travel Cup Yeti,Ozark Trails and more Cooler Cup, Sliding Splash Proof(30OZ,2Pack)

I purchased these to replace cracked lids that I had on 30 oz stainless steel cups. I didn't want to throw away perfectly good cups and the price was right on these, to at least try them. They did not fail. If you have a 30 oz stainless steel tumbler and need replacement lids, I would highly recommend these. With the included gasket, the lid fits tightly and I can turn the tumbler upside down to drink and it doesn't leak. I was so happy to preserve my tumbler with a slider opening as I do not care for using straws and I like my drinks covered.Drinking from this lid is PERFECT. I can hold the cup completely upside down as I drink, and the sliding mechanism/lid opening, provides the perfect flow to drink comfortably at a good pace of swallowing.The lid that I replaced was the one my tumbler came with but the flow was much faster. I actually love this lid much better than my stock lid. Would buy again.

Nice and tight, works perfectly

I have a tumbler that the lid was cracked and the washer was no longer usable. These kids are the same quality and probably the same size. However, the hole to drink from is a bit too small and the washer is just slightly smaller so the lid is not a snug fit. As long as I'm not careless with my tumbler the lid stays on, but I have to keep control over it, especially when driving, since the lid can too easily come off. I improved the lid by drilling a small vent hole that allows airflow when I drink out of the main hole.

Works great on my Mammoth insulated cup.

One of the 2 lids has a broken sliding closure, and it does not stay attached to the lid. Being homebound, and not willing to spend more to return it than it cost me, I'm apparently out of luck. So far, the other lid seems to be working fine, though (slightly) awkward to sip from, as the actual opening is a bit deep to accomodate the sliding closure. It does fit my Mossy Oak tumbler very well, seating very tightly (almost too well, it can be hard to take back off, but that's better than leaking)