Membrane Air Freshener Tech-gel technology Up to 30 days Net weight:8g Fluid and semifluid allowed Use membrane technology, no leak. Good for car, home, and etc. Oil membrane air freshenerAir Freshener, Car Air Freshener, membrane air freshener, oil air freshener, EVA air freshener, Card air freshener, Auto air freshener, Car air freshener, hanging air freshenr:Oil membrane air freshenerGood for ...