Yescom 50ftx5ft Diamond Foil Silver Reflective Mylar Film Roll 210D Oxford Cloth for Plant Grow Room 5'x50' super durable diamond film foil roll, with diamond textured surfaces and up to 99.99% high reflectivity Used to line grow room walls, floors and ceilings to reflect precious light back onto your plants Using this in your growing room instead of buying many grow tents Heavy duty 210D black lightproof oxford cloth backing makes it strong and very easy to work with Great for you to grow exotic fruits, herbs, vegetables or seasonal fruits out of season