Rain science grow bags eliminate many of the problems associated with container gardening. Grow bigger healthier plants with less hassle in a fraction of the time. -Air root pruning creates masses of fibrous feeder roots which maximize plant growth -Minimized root circling allows for longer life in Rain Science Grow bag -Rain Science Grow mags material is Greenguard Certified to ensure healthier Air quality and mesh that provides protection to prevent the growth of harmful bacteria mold and algae