Ugrowseeds Rectangular HDPE Grow Bags 4x2x1 Feet For Gardening HDPE Grow Bags are a type of planter or container used for growing plants, typically flowers, vegetables or herbs. They are made from high-density polyethylene (HDPE), a durable plastic material that is resistant to UV radiation ,which can easily last for 5 to 6 years in sunlight and rain after planting. About this item Alternative to plastic pots or traditional containers Affordable, durable, flexible and easy to relocate Very light weight Unbreakable even after falling Washable and reusable UV protected