Vivosun Highly Reflective Mylar Film Roll 4Ft X 100Ft For Outdoor Grow Room Product Details Premium Material: This high-quality aluminum paint coated film increases the intensity and spreads light more evenly; Both sides of the mylar film can improves the reflectivity to 95%, making sure the efficient use of light Ideal Size: This 4ft. x 100ft. reflective film is big enough to cover all of your demands, such as covering the outdoor grow room; You also could cut the film into different sizes to fit your other purposes Easy to Clean: Our reflective mylar film is thermostable and tear-resistant features, which is good for long-term use; Also waterproof, meaning that you can simply use wet cloth to wipe the dirty mark Sustainable Usage: When you don?t need the film, just roll the film up for sustainable use; Have no worries of getting dirty, you can use the sealing cover, which is included in the package, to wrap the film up to keep it clean Wild Applications: Our highly reflective film could be wildly applied to different occasions, both indoor and outdoor, like grow room for plants, grow tent; Also could be used to wrap paper, home decorations Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.