About this item Keep All Light In: The VIVOSUN grow tent blocks all light from escaping and is lined with 100% reflective mylar to boost the output efficiency of any grow tent setup; the zipper with black lining creates a lightproof seal without the need for additional flaps and self-adhesive tape Extra Thick, Stands Sturdy: The quality 340 g Oxford material is tear-proof and double-stitched for good light blocking; lining made from non-toxic PE material is safer for your plants, and the tent is supported by strong metal poles that are specially finished for smooth installation Easy Observation of Your Plants: Our easy-access door unzips smoothly, and the observation window makes it easy to peek inside without disturbing your setup, so you don't throw out your back checking on your plants Fast Installation: VIVOSUN grow tents are easy to install with no tools needed, even if you've never done something like this before; unrivaled craftsmanship and materials make our grow tent the excellent choice for professional growers More Options, Simple Assembly: We pride ourselves on delivering a selection of grow tents at various sizes; With the guidance of the manual, you can assemble the tent in a matter of minutes