Bivvclaz Double Wall Glass Coffee Mugs Set of 4, 16 oz Insulated Layer Coffee Cups with Handle, Clear Borosilicate Glass Mugs, Perfect for Cappuccino, Tea, Latte, Hot Beverage, Wine, Microwave Safe

These mugs are fantastic. After the initial wash to remove the packing dust, they were very shiny and held up to coffee and tea with no problems. Warm ups in the microwave were no problem as well. The double walls did prevent condensation as advertised. I was concerned at first at how light they were. I'm guessing they're not as sturdy as a ceramic mug, but I'm always more careful with glass anyway, so it's not an issue. On a side note, I had a shipping problem where the box had a big gouge and one of the mugs was cracked. Returned it with no problem and the replacement arrived in a few days. Great service! Overall, these are mugs are great for every day use and I love being able to see the coffee swirl and mix with the creamer. Good stuff!

Exactly what I was hoping for. These are fragile and maybe/maybe not microwave/dishwasher safe.. but so far they are both and I am OK with the risk. Everything here is literally crystal clear when you receive them. So far I have washed by hand a couple times and on the top rack of my dishwasher a couple times. If you are looking for what these offer in reality instead of infinite durability these could be right for you. These are “fancy” and require some extra consideration. I have warmed up my cups multiple times in the microwave with the desired outcome. I have also cleaned in the dishwasher top rack multiple times. So far, so good. This is risky, so your experience may vary. These are NOT the guaranteed microwave and dishwasher safe options. Be careful or buy something else.

We bought these a couple times because some get broken. I do love them but the last purchase they seemed weaker in the handles. They do hold heat very well

I love these!! I do hand wash them every time. I don’t mind that thought because they’re so cute and make me happy. My coffee/tea stays warmer longer with the double wall.

Great for coffee or hot tea. Size is perfect

I loved the look and feel of these mugs on first use, therefore I was extremely disappointed to see condensation slowly forming on the bottom, in between the walls. There's no way to get it out, and while only a small amount now, it continues to slowly increase. It's sometimes kept overnight in the refrigerator to chill coffee, and that's when it happened, I was shocked to see a big bead of condensation ready to drop and be entrapped within the walls. It's not leakage of the beverage, it's condensation. I had read a review before purchasing that noted the same thing, and thought it was probably just a fluke. Unfortunately it was not. These came in a plain brown box with no brand name, and no instructions or brand name within the box, just wrapped individually with bubble wrap. The style was not available in the double-wall brand that I usually get, but I really liked these and thought I'd take a chance. I'll be returning them and will look for a similar style in a name brand that shows the name on the box.

I love using these mugs - the size, shape, insulating value and the feel in my hands with the large handle. BUT The damn hole in the bottom allows wash water to enter into the hollow wall and I cannot get it out! I wash by hand and I have used them for over a year now. I have tried every way to drain the internal water and condensation to no avail. Needless to say they are not used for my visitors since it is sooooo unsightly! Please anyone, if you have a fix for this, let me know! I have set them onto wicking paper, used a toothpick, used dental floss and I am about to drill a hole myself... The simple solution is to have the drain hole on the lowest part of the base, but no, it is in the raised center! Auuuugggghhhh.....

These mugs are elegant and well crafted. I've used them daily for a couple of years or more and have owned more than a dozen. I'm happy and expect to continue to buy them as long as the price doesn't go up. Here's the one cavaet: I wash them in the dishwasher because I'm too lazy to wash them by hand and the dishwasher does a better job. Eventually the resin that forms the tiny breather hole in the bott0m begins to admit water and they have to be trashed. It can happen as soon as two or three months or may not happen for more than a year if you're lucky. It must be much harder than I would think for modern materials science to solve that problem. They would be a better bargain if that problem were solved. I gave them five stars anyway, based on aesthetics. Some reviewers have criticized these cups for fragility. I suppose they are right if you compare them to regular porcelain coffee cups. But I think that's unfair. They're made of then glass. Of course they crack and break. Compared to a Champaine stemware they are significantly less fragile. And because there's no exposed edge, I've never found a chip in one.

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Inner layer got broken while washing with sponge. Looks like it’s very weak from inside. I got lucky my finger didn’t get affected. The sponge saved my fingers.

The glass is very fragile and can break easily. I will find another product with better quality.