The Bloom Farms Highlighter is an easy to use cannabis pre-filled cartridge. Bloom Farms cannabis oil is extracted using Supercritical CO2 technology and is then further refined to remove plant lipids and waxes. To allow for easy vaping, a small amount of pharmaceutical grade polyethylene glycol is added. Each Highlighter cartridge and replacement cartridge comes with 500mg of oil formulated to have 40-45% THC. This will generally allow for 150-200 puffs.