Why don't you tell folks that these are plated??? The under metal shows. I have zero idea what metal that is. I'm afraid to drink out of these.
1850852
These are solid copper cups. I bought cups and a picture that I keep water in over night for a minimum of 8 hours. The water becomes very beneficial for our health. No fear of these cups, you will love them and the many benefits water provides when stored and consumed after a minimum of 8 hours : )
595366
I never used them to drink from, they do look like they would rust if used more than once.
274961
They appear to be a #7 plastic, which according to the internet is a catch-all category which makes it difficult to know exactly what the composition is. BPA, etc, can not be ruled out from this category of plastics. I wish I had asked the same question. Otherwise the quality is very good.
2176467
They're coated steel. Scraped a little off one jaw and saw silver metal underneath. Also found that a magnet clamped to it easily indicating ferrous content. Copper is a bit soft for the kind of work you want these jaws to stand up to, thus making the steel 'backbone' necessary I guess.
423839
No label. Only marking i can find is raised letters in the lower portion staiting "Not for hot beverages" I am pleased with them including the look of uneven glass. Makes them look older.
2176470
I am not absolutely positive, but from the looks of them I believe they are copper plated steel. Usually solid copper is too soft, so ours would show some wear since they have been used several times, but they look like new.
619692
I'm looking at them, and I'd say they are plated. Way too shiny. A magnet DOES stick to them, also.
226804
I think they will rust if used inside or out I think they are chrome plated steel. I still would take them over non-metal. Probably as good as you can get. Very nice looking.
1850962
I have had them for probably4 months and they haven't yet. It seems like they are coated with something to prevent rusting? (By the way they feel.)
1567800
they are a coated aluminum...don't know what it is coated with...supposedly Teflon.
1237485
No, there is no information.I have been using them to prepare beer. They are not very thick but they work perfectly. At least for me.Luis C. Orozco V.
536328
I don't think they are plastic. I. Think they are metal on the base but it may be something else we. It's hard to tell. The very bottom may be plastic.
696108
The red portion is made of plastic with the gold/bottom being metal. I think the only reason the ratings are lower so far is because people thought they were glass. I think they're a good buy in terms of they are a cool design and they do what you need them to do, hold alcohol =). They're a solid, fun buy. Safer and cheaper to ship as plastic and they won't break if they get dropped or knocked down.
399001
Don't buy these....I bought them for drinking glasses as well and when I received them I couldn't believe how cheap there were. They are a light weight glass and not suitable for anything.
639306
I actually don't know what additional materials they are made out of. My guess is that "stainless steel" is an industry term to indicate a percentage, and that there are other impurities that go into it too, and it seems that the manufacturer has chosen to use cheaper materials? Just a ballpark guess. Was far from impressed. Here's the warning: "Pursuant to California Health and Safety Code Section 25249.6, the Distribution of this Product Warns you That this Product May Contain Substances known to the State of California to Cause Cancer and/or Reproductive Toxicity"
1779544
I don't remember but not pleased with the quality of the product. They are difficult to drink from and spill over.
1626421
They are not markings, they are embossed into the cup. You can see them on the outside if you fill up the cup with an opaque liquid, if that's what you are asking.