Are they glass or plastic? I can't tell!
1056285
They are plastic, also the mold left sharp edges on the rim and I had to sand them smooth.
148578
They are plastic but a high grade plastic. They do not feel flimsy in any way.
283047
They are glass. Wish they were poly-carbonate because 1 of them is already cracked after 6 months.But it would have happened anyways if they were sealed beams.
795148
I'm pretty sure it's plastic. I've had them for a long time now and I really like them though. They're decently made and pretty durable
624549
they are glass. but they are made to withstand high temperature (inside a pressure cooker) so they might work for your needs. use at your own risk ;)
614717
I think they are a heavy duty plastic....they are black and it is very hard to tell. They seem pretty sturdy though.
333138
Glass -- and they're quite durable. Also, the heavy design on the bottom masks the wear on the top. Been using these for about 20 yrs!!
646570
No they are not glass they are a hard durable, easy to clean plastic - we have been absolutely thrilled with ours!
574412
They are plastic, and they hold up well. I wasn't sure I wanted plastic, but they work great.
1044300
It appears to be glass, however I have not broken one so I cannot tell. They seem to heavy for plastic.
1030073
Hi, they are not glass but a heavy plastic. I haven't had any trouble with mine. I use it almost every day and truly love it!
1336350
Plastic....but that label is different to my label....same company however, maybe it is glass. Cannot be sure!
1986486
They are plastic and I love them. The show many colors that change. I liked mine so much that I bought one for a Christmas present.
1254449
I think they are glass but won't swear to it because it was bought as a gift.
1088539
I believe they are Polymer, too light to be glass & a good buy for the money...JMO... I keep a pair on my book case & one on the garage work bench and a pair out in my shed...lol...
674839
Sorry, I just pulled mine out. Yes they are glass. I was a little disappointed with them but they are glass.
2112669
They are plastic. Use a decorated cupcake liner or a cupcake wrapper they are beautiful