I saw these glasses at a cafe in our place and my latte is getting served. I was excited and wanted to have her immediately because I'm enjoying my latte slowly and it usually becomes cold quickly. This is over with these glasses !!! It stays at least 1 hour (!!!!!) warm, will get the glasses yet classy, the drink is "floating", so to speak in the glass. Although the price deters only, but the (blown !!!) glasses are worth every single penny !!! I can absolutely recommend and will buy more of it. Also recommended for the summer because cold drinks stay cold longer in it, too .....