Reiki Double Wall Glass Infuser Bottle 450mlReiki Double Wall Glass Bottle 450ml. Made from quality double wall borosilicate glass, this bottle includes fitted stainless steel dual infuser, bamboo lid (with steel base) + black neoprene protective pouch. How to use: Unscrew top of infuser basket and put your loose tea, fruits or teabag inside, then screw top back on. Click infuser into glass bottle, add hot or cold water and allow your tea or fruits to deliciously infuse.