Mars Hydro 4' x 4' x 6' 8" (120cm x 120cm x 200cm) Indoor Grow TentDescription Mars Hydro grow tents use 1680D thick canvas, heavy duty steel poles, and SBS zippers, creating a non toxic human work environment while using high quality materials and locking all light in. Easy observation view window, removable floor tray, and a tool bag to help grow the plants indoors more conveniently. No Light Leakage: Mars Hydro indoor grow tents are made of tear resistant 1680D canvas, as well as heavy duty SBS zippers and double