Gbox Grow Tent 24" x 24" x 48" / 2' x 2' x 4' (60 x 60 x 120 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