Caffeine Beaker Mug, Caffeine Molecule Mug - Chemistry Mug 16 oz Borosilicate Glass Coffee Mugs with Handle and Measuring for Coffee, Latte, Tea or Hot and Cold Beverage - Tea Coffee Mug

Nice borosilicate cup/mug and as expected very thin glass and almost weightless, but delicate and not for people with big fingers. Update: I used this cup 4 times and was very careful with it and I just noticed it was leaking out the bottom. Coffee kept showing up on the countertop and after transferring to another cup I turned the is cup over and sure enough a small crack. This is absurd! I will attempt to get a refund.

Update: why does it have to be so thin? A little too delicate and it's broken within a few months. So my favorite cup now is actually a Mason jar type with a handle. I like the glass because I enjoy seeing the way light is diffused and also how dark my coffee is. And it's thick and sturdy!! _____________ I love drinking my coffee out of this. Absolutely my favorite! It is a bit thin and sometimes I'm scared of it breaking but it's borosilicate and should be pretty durable. I do like the caffeine molecule on one side as well as knowing exactly how much coffee I'm drinking with the measurements on the other.

very cute and is dishwasher safe! the glass is on the thin side but i have had no issues

I have worked for decades in labs where borosilicate glassware is used for many purposes. Heat resistant and generally tough, it survives the scuffs and bumps of lab use amazingly well. The point of this mug is to simulate that -- but with a handle added, and with the molecular diagram of a caffeine molecule added for humor. As a joke this is a bit edgy, because one of the most important rules of lab safety is to NEVER drink or eat from lab glassware. While this mug appears (from a little distance) to be just like "the real thing" (a Pyrex or Kymax beaker with a handle added and a funny molecular diagram of caffeine) it does not have the durable and tough feel of real labware that I had hoped-for. I like it, and I will use it -- but I bought it thinking I'd get something a bit more "real."

I wanted a mug that would hold a full 20oz. when filled to the brim, and this "16 oz. mug does exactly that. The other key thing for me is that I wanted a mug that would be my daily "desk mug" so I could make my morning latte and have it on my beverage warmer at my desk and sip it over the course of several hours. If you have a beverage/mug warmer, you know that the key to those working well is that the mug you use needs to be flat or nearly flat on the bottom. Most mugs are not flat - they have a "ring" or "rim" around them and thus aren't flat when placed on a warmer. This mug is exactly that. I bought mine exactly FOUR YEARS AGO and have used it every single workday since! At first I was very concerned at the thin glass. But it has lasted this entire time. I hand wash it - no dishwasher. I do use it in the microwave every day to heat up the milk for my latte, and I also use a milk frother wisk to blend in my protein powder. So this thing has held up perfectly, despite how thin the material is. For my purposes this has been absolutely perfect! If I am looking for a mug to sit with on the couch or take out on the porch with me that will keep the beverage hot for a long time, this is not the mug I use for that. But at the desk and on a beverage warmer it is absolutely perfect. And the handle is also a very nice size and VERY sturdy.

These (I bought 3) were gifts for lab assistants and they loved them. They were nice, large, and sturdy with clear markings and easy to heat and drink from. The price was very reasonable and this is a go-to gift for any chemistry colleagues or friends!

Nice,sturdy, easy to drink from

very thin! although it is cute, i do not trust to put hot liquid in it.

I got this for a nerdy friend of mine....he loves it! He was even joking that he doesn't need to buy measuring cups since it comes with the ml on the side.

Great idea for a mug, loved it when it arrived ....only to find the decals came off after a few washes leaving us with a plain glass. Terrible : disappointed beyond measure.

Le encantó a mi esposa y resiste bien

Great quality gift!

Es muy bonita y original mi único pero es un está delgada espero no se rompa con cualquier cosa