I love these! The insulation allows you to place them anywhere without the worry of water rings. Also, I like the design; they are easy to hold! I also purchased the smaller juice glasses

They hold cold or hot well - they are sturdy in the dishwasher - they are attractive - they are easy to hold - and they'd make a nice small gift for someone just setting up their dorm or home.

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.

Not all double wall glasses are created equal, and these seem to be of a higher quality judging from prior reviews. They do require special handling to avoid breakage. I had a couple Bodum glasses which felt thicker and more durable, and, ahem, my mother eventually broke them anyway. The only way I'd stir something in a double walled glass is *gently and with a plastic spoon*. I rarely use my dishwasher but hand washing with a soft sponge brush such as this is essential. Durable Sponge Cleaning Brush Cup Bottle Bottom Scrubber Kitchen Cleaner Tool for Tea Glass Chinaware Porcelain Coffee Stains 3 Pcs

I think the reason some people complain about "explosive" breakage with other brands is because of the partial vacuum some have. It tremendously improves the insulative properties, but the pop of air rushing *inward* startles people when they break, and I suspect the vacuum actually makes the glassware *more* fragile. These Ozeri glasses don't seem to have much pressure differential, but they definitely have a hard seal, as opposed to a silicone plug. They don't keep drinks hot or cold for a significantly longer period, but they don't sweat or get too hot to handle.

I'm looking for a good set of double wall glassware to use in a hot, humid climate, which won't sweat, and will keep ice for hours. These might fit the bill with some modification. I'm thinking of drilling out the seal on the bottom, putting a dab of epoxy over the hole, and setting the glass upside down in a foodsaver canister and pulling a vacuum. The air should leave the cavity in the glass and bubble out through the epoxy, which should then settle over the hole and harden. Once cured the vacuum can be released, and the glass should function more like a thermos bottle. I'll definitely post my results when I do this.

***Some glasses arrive, contrary to the description and photos, with a big ugly logo enameled on the walls. This is a despicably deceptive practice and one should scour the product's reviews to look for this before buying. I'm happy to report that these glasses only have a small white logo on the bottom. (Also, sometimes the seal 'nipple' is big and prominently visible near the glass's base, This glass's seal is small and unobtrusively centered at the bottom.)***

I've had these for about a month now, and they are working just as I'd hoped. They are attractive to look at when filled, and really do insulate. With my previous ceramic mug, I'd have to pre-warm it with hot water before filling it to keep the contents from going to "just-barely-hot-approaching-lukewarm" before I even got back to my desk, and I'd also have to wrap the mug in a napkin to keep from burning my hands (since cold hands are more sensitive to temperature changes). Now I have hot contents all the way to the bottom of the glass, which is just what I wanted, but the outside stays cool enough to touch. It does get warm (doesn't stay room temperature), but doesn't get hot enough to be uncomfortable.
The only potential concern that I have is just based on the fear of breakage. Their product description says that this type of glass is "shatterproof", but they put a warning in the box that says "be very careful when adding icecubes or stirring with a metal spoon", which doesn't sound very shatterproof to me. I don't expect it to be an issue for me, because I'm cold at work not hot (therefore no icecubes), and we have plastic 'silverware' at work, so again no metal. But...they have a "no glass container" rule which they are currently letting me slide on, since I work at a desk. However, if it ever does break, they will crack down and I'll be back to my barely functional ceramic.
Hopefully that won't happen, becauase as I said, I really like how these are working, and the look when filled.