“Designed in New Zealand to give the incomparable feel and clarity of glass…” While I would agree that they look like glass they definitely ‘feel’ like plastic when you hold them. Also, the mugs have labels stuck to the side of them that used an adhesive that remained on the surface of the mugs after they were peeled off. It took a lot of effort to remove the sticky adhesive and in the process I ended up mildly scratching up the area I was cleaning.