This single-walled bottle is made of borosilicate glass. This is a type of glass that is stronger and lighter than ordinary glass and BPA-free. The bottle is encased in a soft silicone sleeve to ensure a good grip. Furthermore, the Kai is finished with a bamboo screw-on lid and a non-slip bottom, so the bottle cannot just fall over. The bottle comes in an Avenue gift box.

Not suitable for the microwave and dishwasher.