The VIVOSun Hydroponic Mylar Grow Tent is made of high-quality 600D Oxford canvas that is lined with reinforced PE layer and 100%-reflective mylar walls, which can effectively block all light from leaking and boost the output efficiency of your setup. The indoor tent is supported with strong metal poles, top bars and tool-free corner connectors to lock the structure securely in place. The premium 340 g high-density fabric is waterproof, tear-resistant and double-stitched for great light blockage, while the inside lining is designed with PE material and mylar walls that are safer for your plants. The plant grow tent offers plenty of openings for setting duct fans, lamps, electrical cords, etc.