Calamus Drinking Straw

The vortex, a natural phenomenon, underlies the design of the Calamus Straw.
Because of a fine spiral cut into the narrow glass tube, liquids aquire a powerful vortex motion, as seen in nature, tornadoes, e.g. or turbulant ocean waves -- the vortex action increases the intensity of the energy.

The delicate structure of the hand-blown drinking straw takes its shape from the golden ratio. For ease of cleaning, the Calamus Straw comes with a bottle brush of the appropriate size.