【LOCK ALL LIGHT INSIDE】MARS HYDRO Indoor Grow Tent interior is made of diamond mylar which is highly reflective. (Other brand's mylar and reflective rate is as low as 50%, won't provide efficient light. )MARS HYDRO 1680D canvas, being double stitched, is tear proof for perfect light locking. Mars Hydro's grow tent keeps 100% lighting beams inside and helps your plant absorb more lights. EXTRA-THICK --No light leaks or rips at all | 【DURABILITY GROW TENT】Stable metal corner adapters and poles are the trustful supporters of the tent, standing sturdy, neither rusting nor paint-falling, quick easy tool-free installation. Mars Hydro's heavy-duty metal zippers, with double layer black lining, are the best on the market which create a light-proof seal | 【EASY OBSERVATION FOR YOUR PLANTS】Special observation windows are made by double layers of cloth. Observe the growing conditions of your plants without opening the tent and avoid disturbing plants. The observation window also serves to dissipate heat and ventilate air | 【REMOVABLE TRAY KEEP FLOOR CLEAN】The package includes a removable waterproof floor tray to hold soil and fallen leaves. The tray, removable and water-proof, can be taken out to wash easily | 【Guaranteed by MARS HYDRO】MARS HYDRO grow tents are easy to install even if you've never done something like this before. Clear Instruction and no tools needed! We also offer 30-day unconditional refund for quality problems. Feel free to contact us for any question--24 hours service for you. Order right now with confidence