Bests & Worsts Reviews from Amazon

These are a bit thin. They look great, great size, but whoa I'm kind of afraid to wash them. We'll see how they hold up. *edit/update these guys have been holding up well and we use them everyday. So far good in the dishwasher. I just honestly can not tell of they are actually glass?? They really seem like plastic. Everyone I've asked thinks so too.. but let's just say, they Really seem like plastic. They don't keep your stuff warmer than any other ceramic cup I use, less actually. But they've at least held up so far. But for the price, I don't think I'd recommend them. *Edit again, I'm down to two now. They are extremely fragile and very easy to break. And I've also received my first ever, please remove your review and we'll give you $30 email from them. So might want to reconsider that great star review they show..