In my opinion, these are the best thing to happen to coffee. You can enjoy it hot without burning your hands and it stays hot longer.

Unfortunately, they are also quite fragile and we've broken a couple of them with very minor drops.

I've had one literally break in half in my hands while I was washing it!

I've had 5 of these break on me, I'm afraid to use my last of fear it would break in my hands again. The look, but are not practical. I would not recommend then.

I'm yet another person that lost mine to breakage. They do a great job of insulating (and keeping iced tea glasses from sweating), but I wish Bodum would make a version with thicker glass.

They are amazing cups! I bought the clear one for my husband awhile back, and a solid purple one for me (from Starbucks). Unfortunately, as many have mentioned already, they ARE fragile and shatter spectacularly when dropped. I have bought 2 more since then and still love them. I would not recommend the clear glass ones as they seem more fragile than the ceramic, coloured ones.

Yeah, I'd vote that these are not cool tools. We bought a set and they were super fragile. Don't put ice in them. I love the idea, but I regret buying them. I think we ended up donating the survivors.

Get metal instead. Then you can also put them in the dishwasher.

These are great. A drink with ice lasts a long time as the heat from your hand will not transfer. So far I have not broken one, but as they are glass I am sure dropping one would break it.

Bodum's double-walled glass teapot is awesome.

Trudeau is another (among many, I suspect) company that makes double-walled glasses, and for a bit less than Bodum.

Like others here, I've found them both delightful and fragile.

Once again, awesome but fragile. I popped my Bodum one washing it. I haven't dropped one but I fear the ensuing chaos.

Starbucks sell these (where I bought mine). They also sell double walled ceramic which, to me, does a worse job at keeping the beverage hot but is perfectly fine at shielding your hands. It's possible the quick cooling is because the ceramic is smaller than the glass one I had so less liquid. The double walled ceramic is not Bodum, however, but it has proven to be less fragile.

Another perk of these is that they do not require coasters even for ice cold beverages, no condensation gets to the outside.

Tervis Tumblers: same functionality, not as fancy, but rugged!
http://www.tervis.com/Products/CLEAR/Clear_Tumblers_CLR-TUMBLERS.aspx

I hate to be a "me-to" on what I think are really cool tools in concept, but the two cappuccino glasses I got for my birthday in September didn't make it through Christmas. There's a reason for stainless steel, $1 coffee mugs, and such...you won't cry when they fall off the counter.

What about a ceramic mug with micro bubbles of air blown in during the molding process? When I was in Germany last month, I saw a house being built out of these concrete blocks with little air bubbles in it...super strong, lightweight, and insulated. Sounds like a coffee mug for me.

Not surprisingly, how fragile these are depends on which size you buy. We have everything from the 2 oz espresso glasses up to the 21 oz ice tea / beer size, and while we have broken a couple of the large ones, the smaller ones are much, much more durable. (You could probably throw the espresso glasses across the room without breaking them.)

The bottom line is if you're careful when washing them, you can use even the largest glasses on a regular basis without breakage, and we have done so for years.

If you like cold/frozen drinks, the martini-glass-shaped "Manhattan" model is great, keeping your cocktail frosty long after it would have warmed to room temperature in a regular martini glass. Good stuff.

I thought long and hard and read a lot of reviews before buying my two Bodum coffee cups. And wow, I cannot be happier. I never put them in the dishwasher; I just wash them gently by hand. They've never cracked or broken.

It's a great way to keep your hands from getting hot holding the cup, and I love the way the glass feels on my hands.

I haven't had any problems, and they've become my favorite coffee mugs of all time.

I bought these the first time I saw them. They are great glasses but as everyone else has mentioned my set of 4 did not last long, they break so easy. I have been searching for a tall coffee cup for the car that does not have a handle and is not made of stainless steel or plastic, it is impossible to find so I might go back and get this newer style Bodum glass.

Less impressive-looking, but highly functional, are the Iittala HotCool glasses. They're also made of borosilicate glass, but are single-walled and have a plastic sleeve. I've broken one by knocking it off a counter (they are glass, after all), but the rest have stood up to near-daily use for more than a year, for both hot drinks (like herbal tea) and cold. And I find them a pleasure to use - so much so that I frequently take one to my local coffee shop with me.

Double Ditto on the fragile...we've had two of the 'latte-sized' shatter into a gazillion feathery shards...which was frightening because even after a very substantial clean up effort, we kept finding some of these glass slivers weeks afterwards.

Stopped using the large size. Still use the small, shot glassed sized for double shots of espresso...they retain the heat but re easy to hold.

Ditto on fragility and beauty. Bodum makes wonderful products and I was blown away when I first saw their double-walled glasses. Watching cream curl through an iced Americano in one of the tallest glasses is like watching fluid art.

But not only are these products fragile the glass is very, very sharp once broken - clean up is something one should be very cautious about (ask me how I know). The glasses do work well with very nice mouth feel and reasonable heat retention. I don't feel the heat or cold retention is as good as my trusty and elegant Aladdin Senja desktop mug or travel tumbler - yes, they are stainless but I've not found that coffee flavor is impacted by stainless.

Got four Bodum glasses about 18 months ago and found them absolutely excellent, would definitely recommend them for both hot and cold drinks. Hand wash and normal handling never broke any of them and there's been a few times when they've been knocked over with no ill effect. The price per glass is pretty high but after plenty of time to reflect I think they were good value for money and I'd buy more.

I´ve had some 8 of these for more than 2 years. I love them for things hot and cold. They always attract a lot of attention and praise with guests. I put them in the dishwasher but I´ll probably be more careful with them around my son after reading the reviews here. Yet after many rounds through the dishwasher they have not broken on my watch.

Be careful with ice cubes as well. I've heard reports of people dropping ice cubes into them and making them break.

Currently I put them in the dishwasher. I think the smaller ones I own might have lost their seal as condensation forms on the OUTSIDE of the glass when I make cocktails in them. The larger ones do not have this problem.

World Market used to mail out 40% off-a-single-item coupons about once a month via their email list (the same way Bed Bath and Beyond mails out coupons like candy). I basically waited until these came in and then bought 6 of these glasses (along with a Bodum french press) using the coupons.

If you want a double walled (of a sort- a mathematician would probably beg to differ) pyrex mug, there's the handmade klein mugs, though washing them might be a bit difficult.
http://www.kleinbottle.com/drinking_mug_klein_bottle.htm

If heat retention is really important, get something with a lid.

amazon had a great sale on these a couple months ago, i had them in my cart and then read the comments. breakage, even without dishwasher and hand washing was unanimous.. many people complained that when the package arrived , half were already broken.
i am sure these are made in china, and like many of these product quality control is a problem.
defiantly not a cool tool due to breakage in normal use, normal hand washing.
great concept, just need a better glass fabricator and stronger design

After reading the cool tools review I bought a couple of the Bodum Presso glasses. Design-wise, I love stuff that looks like it belongs in a science lab. I make my coffee using the Aeropress (also recommended here) and start my morning feeling like a mad scientist. I love it.