I love the borosilicate glass and have replaced most of my glasses and cups. I keep these particular glasses in my freezer for cold drinks. This would be a wonderful glass if the rim weren't so wide and if it weren't so big around. It would be a wonderful glass for a large woman's hand or for a man's hand. It's almost too big around for my not-so-small woman's hand.

I reach for this glass every evening I want an ice-y cold beverage. It absolutely does not sweat...not a drop. I use it on the patio on humid southern nights and not only does it stay dry on the outside, but the drink stays cold! Ice lasts as long as I take to finish my beverage. I have average sized (female) hands and it fits comfortably in my grasp. I love the ergonomic shape, making it so easy to pick up and hold. In cold months I prefer wine in Riedel because of it's light-weight and thin lip. The Serafino has a slightly thicker lip due to the double-layer construction, but I don't find it unappealing because it's so smooth and the glass itself is light-weight. It definitely has the feel of "better" glassware. I did have an incident after nearly a year of use, where I found the inner layer of the glass had separated somehow, just sitting in my cupboard. Sometimes I run them through the dishwasher (they say they are dw safe) and sometimes I just hand wash. I'm not sure which I had done, but something caused this to happen and I guessed it must have been the heat of the cycle, then sitting and cooling down in the cabinet. Who knows. But the main thing is that I contacted Ozeri customer service through email, and they responded THAT DAY. I had a replacement glass, free of charge the next week. Not only do I plan to buy more of these glasses, but I intend to give them as gifts. I can't imagine anyone wouldn't love this glass. They are a functional work of art.

Left to right in photo: Zen Room UltraClear Strong Double Wall Glass; Tervis; Ozeri Serafino Double Wall Insulated Ice Tea and Coffee Glass 16-oz and all of them are messy with condensation. I like the feel and look of the Ozeri glass . I was going to return them because I really don't need more glasses that sweat but decided to keep for hot coffee drinks. Still on a mission for condensation-free glasses.

Update 10/12/19: I'm changing my rating from 3 stars to 5. I've come to the conclusion that there isn't a glass out there that does not form condensation but these Ozeri glasses are by far the best that I've tried.

I've purchased three sets so I guess I love them. My first purchase was 2 1/2 years ago and none have broken. IDK why reviewers are saying that these glasses are fragile, that's not my experience. They've banged around in the dishwasher, don't get any special handling and have survived being tipped over onto my husband's chair-side table.

I bought the 2nd set for my mom. They're easy to hold and she loved drinking her coffee from them. Add a straw and no more spilled coffee on my mom which meant that we weren't changing her top multiple times throughout the day. She loved her coffee.

The 3rd set was recently purchased while furnishing a cabin we bought this summer. It just dawned on me that there's a 4th set in my future (like today) for my step-mother. She visited recently, commented that she really liked the glasses and asked me to send her the info on where she can buy them. I think I'll send the glasses instead of the link.

They look a liitle odd with the "reduced waist" around the middle, but that provides a positive grip and they feel great!

It's a bit spooky grabbing one out of the microwave while the water is boiling, but it's just warm.

Great for hot drinks, great for cold drinks. Clean easily. Look great.

Living in Florida, it is impossible to keep anything really cold without insulated cups or glasses. Before discovering these wonderful glasses, the only thing available was made of plastic, and personally I do not like drinking out of plastic. These wonderful cups are made of glass and are insulated! Unfortunately, because they are glass, they are liable to break and I have broken 3 of the set of 6. Even though they are not inexpensive, I still had to order another set of 6 because I love them so much. You will not be disappointed!