O.pen the o.riginal cannabis pen. We started extracting cannabis oil in 2010 and haven't stopped since. With more than 100,000 hours clocked in R&D we're in relentless pursuit of bringing you the best cannabis oil extracts to satisfy any occasion. If you're entry-level looking for a consistent, repeatable experience or a cannaseur wanting to experience the nuances of cannabis terpenes - O.pen has an award-winning product for you backed by a Friend for Life satisfaction guarantee. Go with the O.