The FUNNEX offers the same brewing experience that you know and love from your favourite 3 Cup Classic Chemex (CM-1, CM-1C, CM-1GH), but in a smaller package. It's made from non-porous Borosilicate glass that doesn't absorb nasty odours or chemical residue. What separates the FUNNEX from the other Chemex coffee makers is that it allows you to brew into whatever vessel or coffee server that you choose! This versatility allows you to brew directly into your travel mug, or you can use multiple FUNNEX brewers on a pour-over stand in your cafe for a very fun brewing experience! The double-walled glass design keeps heat loss to a minimum while also retaining the Classic Chemex look and feel.