This glass bubbler attachment is an official replacement part for the Pulsar Sipper Vaporizer. Made from quality borosilicate glass, the Sipper Bubbler Cup adds water filtration to the vaping experience, providing the smoothest hits from dabs and 510 cartridges. The bubbler cup can be used with the Sipper's Auto-Fill function to draw vapor hands free; then it can be removed so you can sip at will. Purchase extras so you can swap them out as they fill up and keep the party going!