Ello Oasis 40 oz Tumbler with Handle & Retracting Straw | Reusable Insulated Stainless Steel Cup 100% Leakproof, Gifts for Teens Women Men | Keeps Cold for 20 Hours, Cup Holder Friendly, Daisies

It was good until it started leaking. No matter how tight you close it, the rubber around the straw part will wear off eventually. 🤷🏻‍♀️

Excelente compra, muy práctico y lo mejor que es hermético. Definitivamente lo volvería a comprar

Muy bueno, no derrama y el popote es bastante cómodo, aunque tal vez no alcance en algunos portavasos, por que es ancho de abajo

Me encantó

I've developed a somewhat obsession with 40 oz. tumblers. I'm on meds that make me thirsty, so I keep one next to me 24/7. I've tried many different brands, and most have something great to recommend them, but come up short in other areas. My biggest complaint always comes down to leaking. Most of the double-walled tumblers will keep your drinks cold for at least 24 hours when filled with ice added at the beginning. But some have issues with lids popping off and all the ice and drink exploding all over the floor when tipped over. (I've had more than enough nights ruined by reaching over for my tumbler at night and accidentally knocking it over and having a huge mess that I have to jump out of bed and clean up. It's not easy to fall right back to sleep after that!) For this reason, I always look for screw on lids rather than the ones you just push on. The next issue is if they tip over and leak from the straw opening. For that issue I look for mugs with silicone seals around the straw opening. But even then, if it's tipped over, your straw opening lands on the floor even if it doesn't fall out of the mug and needs to be cleaned before using again. When I saw this tumbler, I was surprised to see a retractable straw. I wasn't sure how it would work, so I watched a video of it in use. The top of the straw is the firm plastic that I prefer to use. (The soft silicone ones just feel weird to me - personal choice issue....) However, the inner part of the straw is soft silicone and bends over when the tab on the top is twisted around and the upper straw is then drawn down into the tumbler. Genius! It really does seal it tight as well. I tried filling the mug full and then held it over the tub and vigorously shook it to see if anything would come out. Nothing! As an added bonus, there is a little 'bump' thing on the side of the lid that makes it so much easier to get a good grip to help unscrew the lid. As a 71-year-old lady with nerve damage in my hand, I've often had to ask my husband or sons help loosen the lid for me. What a pain to have to wait for help to fill your drink! As for the normal functions of all tumblers this size, it does indeed hold 40 oz. of ice and liquid. I fill mine with ice first thing in the morning then add more cold Diet Mt. Dew throughout the day (and night if needed). I still have ice left the next morning and the drinks stay cold the whole time. I've left my mug in a hot car for several hours as I shopped and it didn't seem to affect it at all. It's definitely well made with a comfortable handle that even has a silicone insert at the top of the handle to help with the thumb grip. The coating is slightly textured to help hold it even when wet. It's not any heavier than any other tumblers of its size and easily fits into my car holder. I do wish it came with a silicone bottom to help keep it from scratching surfaces and slipping around when reaching for it. But I've gotten used to buying silicone boots here on Amazon for my previous tumblers, so I have several to use. I just ordered one to match this one's color better than the ones I already have. (Yes, I have a shelf full of tumblers with boots - I keep them all to use at picnics for everyone to cut down on the amount of ice we need....) I do wish they came in more colors, but that is not a deal breaker. I'm sure they're waiting to see how well they will be received before they release them in all the colors their other mugs come in. Value wise, they are much cheaper than most of the other mugs I've seen and or bought. One other note. Most of these types of tumblers state they are not to be used with carbonated beverages. I can't drink the amount of water I need to stay hydrated - for some reason water seems to make me feel thirstier and if I drink enough, I get nauseated. So, I decided to investigate and found that on the Stanley site it stated that most carbonated beverages are stored in stainless steel barrels before distribution with no issues. The main thing that I've found is that you need to make sure there is a way for the carbon dioxide gas to escape, or it can do the 'Old Faithful' spurt when you open them. (I've had that happen several times! I quit using any type of mug with a sealed lid without any way of venting) Even though these don't leak, the gas can still slowly escape around the straw opening. I've bumped and shaken my mugs a lot and not had any problems with the ones with straws. I haven't found any erosion in the linings of any of my mugs, even the ones I've used for years. The stainless steel doesn't seem to affect the taste at all. All in all, this is my favorite tumbler of all the others that I've bought. I have at least 8 other brands and this one outshines them all. The only thing that remains to be seen is how well it will hold up. I will update in the future if I find any issues.