【Good Design】 Heavy duty zippers & double-stitched fabric to protect and safeguard your growing space, multiple round vents for varied sizes of fan filter, ducting rectangle window with mesh to keep dust and insects out, better ventilation. 【Durable & Solid】 Strong metal poles and solid metal corner connectors that will uphold your grow tent's frame and lock your structure securely in place. 【Light-Proof & Water-Proof】 Completely lightproof and 100% reflective tear-proof Mylar. Waterproof floor with Velcro to create a extra protective environment for your grow. 【Quick Tool-Free Installation】 Easy to assemble and use. No tools needed. We also updated the zippers and make it easily open and close. 【Worry-Free Warranty】30-day money back guarantee hassle free. If you have any questions and problems, please feel free to contact us via Amazon message, we will provide a satisfactory reply for you.