Suwimut 2 Pack Caffeine Beaker Mug Caffeine Molecule Mug, 16 oz Borosilicate Glass Chemistry Mug Coffee Mugs with Handle and Measuring for Tea, Coffee, Latte, Hot and Cold Beverage

The printing on the cup could of definitely been larger. It’s also much more lightweight than I expected it to be. It’s still glass but just… light. Still a good price since it came with two mugs. Also it seems as though one of the boxes had been opened before.

Suspect it would break easily with normal use.

One of them came without the writing on it. I reported it to the vendor but they never responded to me. I do like the mugs though. But I can't give a great review because I didn't get a response from the vendor.

As others point out, the glass is very thin and likely will break if even tipped over. Would prefer twice the thickness rather than two cups for the price. The bottom is fairly flat - good contact at outside - about 0.5mm away from surface at the center of the cup. Probably 60% flat. Works OK for my coffee warmer - an old Daisy.Note: The mug has a very wide mouth so you need to put a cover on it to retain the heat.Took off a star after using it a few weeks - the glass is so thin that the mug doesn't retain heat very well - even though it sits on my coffee warmer.

tl;dr: Excellent cup that has a metric measuring. Be careful of sweating & sticking if not using a coaster.This is great for the science-minded folk or even people who want a little "metric" measuring cup.At first I was concerned the glass was going to be delicate because it is somewhat thin and light. After a couple of clumsy bumps on the rim, handle, etc, it still holds up nice.The handle is big enough to hold comfortable if you have large hands (might not fit all fingers thru back thats okay).I really like the metric measuring on the side. 200 mL is ~6 oz, 375 mL = ~12 oz. So if you use the larger cup settings on Keurig or have a heavy pour, you should still have enough for decent amount of cream.I have used this both with cold brew and hot coffee. It works nicely for both but I do not think it is insulated. It also will sweat. Due to how the bottom is made, it may stick to the tabletop so use a coaster. There have been sometimes it sweats from cold brew, stuck to the table, and spilled as it became yanked.Overall I love it and I love that it was a two pack.