Unbreakable Double Walled Glass Coffee Mugs 10 fl oz, Microwave & Refrigerator Safe, Borosilicate Glass Insulated Coffee Mugs Set of 2 for Espresso, Cappuccino, Latte, Americano, Tea, Beverage

It's the seller's Name! A lot of people are complaining that their Mugs broke... they're Glass. Borosilicate is not unbreakable. A three-word search on a handheld computer (cellphone), would have yielded this fact - "Is Borosilicate Unbreakable", and would have cleared up any questions or expectations! I think the Company name is a little deceiving, but I have exploded a Pyrex bowl, so I knew better! That was my lesson on heat-resistant glass. Anyway, Borosilicate is shatter-resistant to quick temperature changes. I tested mine straight out of the box. From room temperature to 212° in seconds with no problems. I ordered a different brand and returned them because they were broken in the box. These seem sturdy enough to last a while with minimal care. But alas... no glass is shatter /breakproof... this isn't the window of the President's Limo (which still cracks some). And finally, the top of the mug does curve in slightly. I had no problem drinking from it like some others did. PS... These are not solid glass mugs. There is space between the outer glass and the inner glass. The glass itself is very thin. Care must be taken with the mugs. A sharp rap with a metal spoon or even between two mugs - can chip or break the mug. With minimal care, you can enjoy these nice mugs. There's the whole story, pluses, and perceived negatives. If you accept that they are glass... you'll REALLY like these mugs.

Yes, these will break but they are also tough. About the same force that will break a ceramic coffee cup will break these. But these are my fav size and are insulated. Plus I can see what I'm doing when creating cappuccino, latte, etc. Because they are essentially straight sided, a half inch of space at the bottom is about the same as in the middle or top so I can make coffee drinks by sight easily. Yes, they break but not easily and I like'em.

These are awesome. Cups stay cool, look great, and I can see my coffee quite clearly. I’m buying more in a week, the small double Espresso set too. I love my coffees and these allow me to enjoy them more.

It says “unbreakable” in the description, but they're made of glass.. so when i accidentally dropped one, it broke instantly..

Keeps my coffee hot

Bought these for my wife. Thought they looked neat and something little different. On the other hand the unbrakable was a great selling point. She has used them a hand full of times. She just showed me that two of them are already broken. I looked them over and they feel cheap. Save your money. Very light in weight. Not worth the money.

I'm sad to report that these are not unbreakable. I think the look and feel is great, which is why I am giving three stars. But the functionality failed when the first one was dropped and shattered, then a second one, and now a third. I wish they were actually unbreakable. That's what I'm looking for. Mom with tremors wants to be independent with getting her own coffee, but can't hold a coffee cup for long. If you have another product you'd like us to test out, please send.

First, I hate plastic, and I’ve broken way too many ceramic latte cups through the years. These are perfect! Short enough to slip under my Gaggia Classic portafilter for brewing, shows all the beautiful layers of espresso, cream and steamed milk or cream - and didn’t break when I dropped one on my tile floor yesterday!!! Yep, just perfect!

Love these!

Everything I was looking for

Facile à nettoyer

Exactly what I was hoping for. Will see after a few uses. For now, I'm satisfied.

These are really nice. Cup outside stays cool, light. Unfortunately one of mine broke randomly. It says they are under warranty but I can’t find a way of accessing that. I just want it replaced because I love them. If it didn’t break, which was my sole purpose for the purchase, I would rate as 5 star b