VIVOSUN Hydroponic Indoor Plant Growing Grow Tent 2'x 4' Light-Proof: VIVOSUN grow tent is securely lined with light-proof and 95% reflective tear-proof mylar to create a sustained and quiet environment for your grow. Thickness: VIVOSUN grow tent is made from heavy duty 600D fabric with double stitching for light protection. Durability: VIVOSUN grow tent is equipped with strong metal poles that will uphold your grow tent's frame and lock your structure securely in place. Shield: VIVOSUN grow tent is designed with a heavy-duty metal zipper to protect and properly safeguard your growing space. The zipper opens to an easily accessible doorway for convenient access to your vegetation. VIVOSUN grow tents offer easy tool-free installation along with a solid two years warranty.