Goliath Grow Tent 3'x3'x6'11"-7'11"Goliath introduces a smart growing facility that creates the perfect growing environment while consuming very little space. It uses 1680D fabric, thick, durable, light proof, and has reflective walls to increase the coverage, lumen output by 30%. You don't have to doubt the strength as it has metal corners, interlocking pins, and poles made out of metal. Reflective Walls: The diamond reflective walls increase the lumen output by almost 30%, so you