Amazing quality from this brand! I'm sure it will last a long time.Only thing is, there is not pressure outlet and the bottom.

Perfect highball glasses for me! I HATE "sweating" glasses with water dripping and the glasss slippy. I can imagine they may be a teeny bit bulky for some but I have no complaints whatsoever. Love them.

I got these because I was tired of my glasses "sweating" in the Sydney summer. 20 oz = 591 ml, which is more than enough for your standard drink, including (obviously) half-litre craft products like cider or ginger beer. I tend to use the smaller 13 oz product (I bought a range of sizes) for a standard 300-330 ml beer bottle.Slight ribbed effect on the glass is good for grip and I have observed minimal to no condensation on the outside of the glass, which was precisely what I wanted. A normal glass with cold beer will sweat buckets on a humid Summer's afternoon - even worse with a gin and tonic with ice! So in that respect, the cut-down on condensation is very good and entirely the point for me.Other notables - I like drinking out of a glass cf bottle or can, due to comfort and less draw-in of air (i.e. less slurping). The edges on these glasses are quite fat and comfortable on the lips, given they are double-walled. I dishwash these without any concern and they have survived a few decent bumps without damage.I could not find a similar product in Australia for a similar price, and they perform well, hence my thumbs up.

A joy to use for the past 2 weeks since purchase.It's a borosilicate glass 20 oz double walled tumbler. That's the same glass as your Pyrex measuring cup. Mind you, this tumbler has much thinner walls despite being girthy.I use it with my carbonated water SodaStream. I drink a lot of carbonated water. So much that I invested in a 10 lb CO2 tank. For that purpose it's perfect. The tumbler holds enough water that I don't constantly have to go refill the glass. The tall thin profile keeps the CO2 from dissipating along the walls. The temperature and carbonation stay as pleasant from for much longer than my old pint glass.The wave pattern fits perfectly in my giant size hands. A joy to hold. No wider than a pint glass. Doesn't pass a long the cold beyond a very comfortable coolness to the hands from smooth dense glass.I'm drinking so much water now.

I love these Sun Tea thermo glasses, which I bought to replace an even larger Tervis 24oz double-wall plastic tumbler, which I've had for about five years now.Pros: Very attractive glass, both empty and full. I'm not kidding. The photos barely do it justice. The slight waviness in the sides means it's easy for someone with tiny hands like mine to handle it. Keeps cold drinks cold for a long time (haven't tried it with hot yet). Well constructed and well-packaged.Cons (sort of): It is a heavy glass. However, this to be expected in a double-walled borosilicate tumbler. I personally don't consider it a problem, but some folks might mind. It's also rather narrow inside, and even with hands as small as mine, I need a brush to wash it. (As it turns out, Sun Tea sells a four-dollar bottle brush that works perfectly with the glass, so I bought one as an add-on item with my Prime-qualifying order.) Although Sun Tea says the glass is dishwasher safe, I'm probably going to stick with hand-washing. Also, I suppose the price might seem a little high for just two glasses, especially in the day of complete sets at local discount stores for less than twenty bucks...but I like a touch of luxury for a glass I literally use every single day. (Iced rooibos tea is my drink of choice.)Subjective: Again, some might mind the heaviness of the glass, especially when full, but I actually consider it a good feature, as the glass will take quite a jostle to tip over. (This wasn't the case with the Tervis, which spilled more times than I care to admit, and contributed to the demise of not one but two computer keyboards.)The other subjective feeling has to do with the thickness of the rim. Another reviewer commented that it was too thick and resulted in "dribbling around the edges". I honestly don't see how that's possible, but whatever. I really like the smoothness and curve of the rim, which is unlike any other glass (or mug) I've owned. There is no sharpness or edge to catch the lip -- whereas with the Tervis double-walled tumbler, for example, there was the rim itself, which wasn't rounded, and then another outer hard edge where the two halves of the plastic -- the inner and outer walls -- were joined but did not meet perfectly.Anyway, like I said, some folks might be put off by the weight and the thickness and oddness of the smooth rim, but I consider both of those positive features. We only got the two glasses, but if they ever go on sale, I'm thinking we'll probably pick up a few more for general use.The one thing I can't comment on is durability, having only had the glasses for about a week, but they sure give the impression of being solid and hard-to-break. Not fragile at all. We'll see.18 October 2015 update: For those who might be wondering about durability, I still have the two glasses I bought back in April 2014. They both still look like new and I've even tipped them over a couple times without breakage. I do hand-wash them, which may make a difference, and I'm also careful about thermal shock -- that is, if the glass is cold, I wash with cold water. If warm, I use tap water to equalize the temperature before adding ice.