FloraFlex QuickFill O2 BagEnhanced breathability for your plants. The New QuickFill O2 bags bring extra air into your plants with enhanced breathability and aeration. The O2 bags have a black, breathable mesh wrap that allows for extra airflow when your plants need it the most. QuickFill organic coco bags come with a pre drilled center hole for a 40 40 plug or small plant, and two smaller holes for your micro drip stakes, both making expansion and transplanting a breeze. Setup