Gbox Grow Tent 118" x 118" x 78" / 9.8' x 9.8' x 6.5' (300 x 300 x 200 cm) for Hydroponics & Indoor Garden Exterior: Black Polyester Nylon Plastic Lined Interior: 100% highly reflective waterproof Mylar 600D Frame: Firm powder coated metal & spring locking mechanism Built-in Zippers and velcro for easily assemble and disassemble Multiple Ventilation: 6" x 3' round vents, 3 Receptive Air Ventilation (w/ Flaps) + Plant Inspection Window