Just as good as glass, if not better.
581585
This is a good screen protector. I previously had a glass one that kept chipping so I decided to go with one that wasn't glass. I was a little reluctant because I thought one that wasn't glass would feel weird for swiping on and that it would not be as clear, but I was wrong! Thankfully, it is very smooth and very clear and it was pretty easy to put on. You just spray the heck out of it and get it all wet, then you slide it around on the screen until you get it aligned perfectly. Then you squeegee. It's good. Also, it comes with multiple, just in case you need to replace one later.
3774583
I love it, so much better than the glass ones. I have broken several glass beakers and love my stainless one. Coffee is just as good and stays warm longer due to the double wall.
4256732
Love these glasses, this is my second set, I've had the first 2 years and haven't broken any yet, with frequent use.
4271046
I've had these for almost a year now, and on occasion I've banged them here or there. Sometimes I'm amazed they don't shatter.

Still haven't broken a single one, and they have a great weight and elegant look.

People will assume they are $25 per glass, and fragile. They are neither, which is great!
4615430
These glasses are every bit as nice as the many reviews mentioned. Heavy, good quality. They hold just the right amount for milk, water and general use. Above average.
1087837
Beautiful, works great.  Being glass is a little heavier than I imagined it to be, but works great!
3177666
LOVE these glasses! Disagree with other comments about delicacy. Not too thick or thin. I have always put in dishwasher, and as with all my glass items, I make sure no metal spatulas are close enough to be "washed" into them and break them. Other than that caution, I have never had a broken glass, and have owned this glass for several years now, this is just an additional purchase, because I like them so much.
3573119
easy install , great quality glass , lost NO sensitivty whatsoever, video is super simple.
1686897
These are amazing how well they insulate. Bodum's vented design cures the problem of internal pressure that other double wall glasses suffer from. Only drawback would be; even though they are tough glass they are thin so carelessness or rough handling could cause breakage.
675001
This glass follows Kawasaki's classic strategy and succeeds in being better than the competition, because it is bigger than the competition. This glass holds about 5oz more than the standard American glasses, with capacity for a full pint. The logo looks good and appears to be holding up well to the dishwasher after about a dozen washings. Sometimes bigger is better; I'm pleased with this glass. :)
1153976
Really nice piece, and so reasonably priced. We now have a few of these, and each is better than the last. Don't know how durable they are, but as they are glass they get special care. My wife will probably have many of them before long, as she likes them so much.
1721013
Perfect.  No worries about glass breaking, these are much safer than glassbeakers. Clear,  professional lab grade.
4798947
Very well crafted, crystal clear, evenly blown glass.  Definitely not thin where you feel like it's easily breakable, but no so thick as to be heavy or unwieldy.  Might recommend a drying stand, as I've found it difficult to hold straight upside down otherwise - necessary to eliminate all ponding.
2223840
They're beautiful!  Look just like glass, but they don't break and are PBA free so I feel safer using them.  Dishwasher safe too, can't ask for more.
2826119
REALLY nice product. As far as having barware outside on my roof deck, I do not want any glass in case of breakage. We had bought nice plastic wine glasses, but they didn't feel as good when drinking out of them. I bought these and they are a great alternative to glass. I have ran them through the dishwasher at least 10 times by now, and they are indeed 100% dishwasher safe (others make the claim, but are not necessarily true). Drinking out of them feels good. Not as good as glass, but it is MUCH better than plastic. For an outside space that you do not want anything breakable, I HIGHLY recommend these.
239514
These are so beautiful, they look just like glass, but better for outdoor/pool use.  I am so happy with these, I ordered 2 sets.  I love them.
2389461
Great product.  Glass is reusable......excellent all around.