Review on 🥤 MEWAY 20oz Stainless Steel Tumblers 2-Pack Bulk, Vacuum Insulated Coffee Cup with Lid, Double Wall Powder Coated Travel Mug Gift, Thermal Cups Keep Drinks Cold & Hot - Cold Gray, Set of 2 by Amber Dixon

I bought and compared three massagers and am posting this review on each of them. That's long, but the bottom line is that all mugs work pretty much the same. There are dozens of brands/styles of "double vacuum insulated" mugs and mugs and very few listings and reviews of them to tell them apart. one from the other. I spent a few weeks spending most of my free time reading these specs and many of the reviews. My goal was to find a brand and style that I could order several of, preferably each in a different color, to have as daily staples in my home. I wanted one that was big enough that I didn't have to refill my mug before I was full, but I also wanted something that would fit on the smaller shelves in my kitchen cabinets. And I wanted something that was reasonably dishwasher safe. Looking at the specs, I decided that 20-ounce jars would be best for cabinets and would allow me to pour a 16-ounce beverage and still have room for a lid or ice, although I did it didn't. rule out a little less. The 22-ounce glass layout left me feeling like it was bigger than I wanted on my desk, and also thin enough that I worried about its stability that it would tip over too easily. The desire to be able to wash it in the dishwasher led me to focus on those that used powder coating for paint, as vinyl films seem to perform poorly in these harsh environments. And travel coverage would be nice but not required, so that's a determining factor, not a criterion. The prices for glasses that met my needs ranged from ten to thirty-five dollars each. Even ignoring anything costing more than twenty dollars, there was still too much choice. I looked for brands that also had a smaller glass, no larger than 12 ounces, that would complement larger mugs but was fine for spirits or wine. And I focused on brands that had at least 8 different colors. I then narrowed down the choices by discarding glasses that defiantly had a brand name or logo on the side. I chose one of each of three slightly different styles for subjective comparison and some knockout testing. 20 ounce jars come in three main styles. The former have straight sides sloping towards the apex, which is larger than the base. The second I call contoured when the top is larger than the base and the sides have a curve that I think is nicer. And the third has a rounded base - almost like the bottom of a sphere - many of which are referred to as stemless wine glasses. I bought two different shaped glasses, 20 ounces each, and a 16 ounce rounded bottom glass. I went with one from Meway, which has a relatively smooth outline, one from Tahoe Trails, which has a sharper outline, and one from Clear Water Home Goods for the 16 ounces. I ordered all three in purple to see how close the colors matched. For the record, Meway was light purple but looks a bit washed out compared to Tahoe Trails, and Clear Water looks a darker blue unless you can see it in bright light. They all came in boxes, each with a lid (although only the Tahoe Trails lid could close, others have a permanently open drinking slot), and Meway also threw steel straws with a cleaning brush. To my not-so-experienced eye, the internal dimensions and shape of two 20-ounce cups look the same, so I measured the actual capacity. Both 20-ounce cups hold 20 ounces when you fill them to the brim, but they only hold 16 ounces when you fill them just below the space needed for the lid. On the other hand, a 16 ounce jar holds 16 ounces with the lid and 18 ounces without the lid. This makes the 16oz much closer to the 20's and more desirable due to its shorter height, although it should also be taken into account that it won't fit in my car's cup holder while the other two easily fit. Tahoe Trails is 7" tall, Meway is 6-3/4" and Clear Water is 5-3/4" (but wider than the others at the base). Neither Meway nor Tahoe Trails, but the Clear Water Bottom has indented text identifying the manufacturer as Polar Camel. If you search "Polar Camel" you will find literally thousands of glasses engraved with text or graphics. I've gone through all of these listings and Pure Waters was the only one I found without engraving. The Polar Camel says (on the bottom of the mug) "hand wash only" but as it's powder coated I chose to ignore that. Functionally they are largely identical. Outside, Tahoe Trails is noticeably (though not significantly) larger, I think this may mean there is more vacuum space on the Tahoe Trails, but it didn't seem to affect performance, I filled them with crushed ice, covered them with lids and left them 24 hours Lying untouched on the dining table for a long time when the average room temperature was about 76 degrees Fahrenheit. I used a 20 ounce glass beaker as a control. The ice in the glass jar was reduced to a few floating pieces after about 5 hours, all the vacuum jars had about a third of ice in 24 hours. I then repeated the test (no controls) with the lids closed. Unfortunately the weather was not favourable, so the temperature in the room was about four degrees higher. Not enough to invalidate the results, but enough to skew them a bit. With the lids closed, the ice in the 16-ounce jar was reduced to a few chunks in 21 hours, and the 20-ounce jar had just a tiny chunk left after 24 hours. In general, the ice cream melted about twice as fast when the lids were removed. After determining their functional parameters, it was necessary to obtain data on their durability. To test this, I used my dishwasher. There are two dangers of not hand washing these cups. First, the color coating can be damaged cosmetically or physically. Second, temperature changes can cause the seal to lose its tightness. When that happens, you end up in a glass that doesn't keep things cold or hot much longer than a regular mug. These two reasons explain why most manufacturers recommend hand washing only. For a week or two I washed all three machines in the dishwasher when I finished a load, which is about five or six times. To protect them better, I always put them on the top shelf. All of the cups remained fully functional and kept cold for as long as I needed them to, but I didn't do any torture testing or additional timed firefights. The Tahoe Trails mug developed patchy discoloration, but I can't tell if it was just a bad mug or if they might have used a different coating compound than the others. The reviews for these glasses are full of people who either machine wash them with no problem or do but their cup is ruined. I believe this is a potential problem, but relatively rare; If this happens to me I will buy a replacement and not scold the manufacturer. I'd rather take a risk than treat my cups as sacred objects. Also, let's talk about the most common complaint about the Tahoe Trails glass. Lid. The lid has a hinged piece of plastic that locks in the down position to completely protect the mug from leaking (I didn't test this). The complaint is that this bit of plastic protrudes over the rim of the mug in the open position, forcing it to rest against your nose when you're trying to drink by tilting the glass instead of your head. This complaint is entirely valid, but it's also akin to drinking straight from a soda can that has a pull tab. You may decide that having to tilt your head back when you're drinking is a deal-killer, but it can definitely be a problem if you plan on drinking and driving. You may also consider purchasing a third-party cover if you really like the look of the Tahoe Trails toggle switches. As I said in the beginning, they all work pretty much the same, have slightly different aesthetics, and slightly different user profiles. The technology seems mature, so it doesn't really matter which brand you buy. Be mindful of the form factor when popping it in a car cup holder. Get the stemless design if you don't want to take it in your car and don't want it to look huge. Get any color or design if you only hand wash, but probably settle for powder coated ones if you intend to run them in the dishwasher. If you have any questions that I haven't answered, please comment on this review and I'll try to answer them.