REAL FULL Spill & Leak Proof & Straw Friendly Air Tight Tritan Tough Plastic Premium Lid Fits 30 OZ Yeti, RTIC, BOSS, OZARK TRAIL & Universal Fit For Most 30 OZ

I purchased this lid for use with my 30oz RTIC insulated tumbler (which I love, BTW). This lid is certainly very leak-proof, even with the flip lid closed and held in an inverted position. The flip up does not interfere at all with my normal sized nose. This is a very well-made lid, and the rubber gasket that prevents spilling is actually a double gusseted ring, that fits securely in the detent that is integral to the lid. The flip up part is durable plastic, with a molded rubber piece that fits into the clear plastic lid when closed -- thereby creating a solid seal at that point. I've had not one drop leak with this lid when totally inverted.Actually, after purchase here on Amazon, Lobo's rep Jeremy, emailed me to make certain I was happy with the purchase. Indeed, I am. The only issue I thought I might have is that the lid seals very well, and that it's somewhat difficult to remove. Even prying up with the small plastic tab which protrudes from the lid for that purpose proves difficult for me to remove the lid. I was told that each lid is inspected by hand before shipping, and had not had issues with too tight a fit. This tight fit on mine could easily be the result of the RTIC tumbler's dimension variability and not the lid. Still, Lobo (Jeremy) insisted that a replacement lid could be in the mail if I chose. Certainly, the very best customer service possible -- especially for an item that isn't overly expensive. I'd do business with Lobo again!

This thing works great almost all the time. At a certain (hot) temperature it doesn't completely hold everything in, but once it cools off you can turn it upside down just like in the picture and everything stays in. The clasp does hit your nose when you go to drink, but it's not a huge deal.

Just got it, fits my sams club version of the yeti, seems great, I will probably buy more for friends that have yeti-ish cups. Havent dropped it yet but did turn it over sideways.Saw another reviewer saying lid door doesnt go back all the way, mine does, almost touches the lid when it flips back. There is a place where it feels like it stops then it goes a notch further.EnjoyUpdate: dropped and broke my tab on the side opposite from the hole, still didnt leak, but concerned it will eventually. Going to contact for replacement since description says 5 years no questions asked. These are great, really great if they replace it. Still 5 star worthy...also turns out, very easy to cleanUpdate update: they replaced it no problem at all, over this time having these lids they have been great, ordered 2more

This is a bad design. I use it to drink my smoothies, the little lid won't fold back all the way so hit your nose every time you try to drink and is really annoying. Also the opening is too small. Really annoying design!

Every time I try to take a drink, my nose is pressing the lid (because the lid does not swing out of the way far enough)... typically there is some fluid residue on the underside of the lid... that gets transferred to my nose during the process. I would buy a different lid.(FYI, my nose is a standard size and I have never experienced this type of issue ever before).The lid does appear to seal well with my RTIC 30 oz cup... I would feel comfortable putting a full drink in a bag with this lid.

This thing works. It really is spill proof. The seal is also excellent. I would have given this a higher rating but it broke after just a few months of casual use. I can use it as a cap but the "stopper" part no longer connects to the cap part making it a regular old cap.

Truly leakproof! The only time I've had a drop of liquid come out is when I was testing it with water and I shook it pretty hard. I have seen other reviewers complain about their lid not going all the way back, but my lid does. It does interfere with my nose a little, but as long as you don't smoosh the lid up to your face to take a drink, you should have no problem. I'm currently using the lid on a 30 oz. Ozark Trail tumbler. Tip: to remove the lid from the tumbler, pop the cover so the vacuum seal is broken and it makes it easier to take off. Also, if you have a hot liquid in your cup, the cup will lift up a little bit from the expansion of heat - this is science. :)

I am very pleased with our Lobo lids for 30 ounce Yetis. They really are spill and leak proof, and the deciding factor for me is that the lid has that extra adjustment that takes it back another notch so you can drink from it and not get your nose wet. I really wanted to order from another company that had different colors, but theirs didn't lie back as far and the company owners said you have to learn to adjust your drinking position. You don't have to do that with the Lobo. I can fill my Yeti, stuff it in an outside pocket of my Bible study bag, and everything is dry when I get there. I highly recommend this product.