The blackout honeycomb shade is made of non-woven fabric and polyester fiber fabric. In summer, it can effectively block outdoor heat, and in winter, it can effectively store indoor heating, thereby saving energy costs. An open box product is a product that may have previously been purchased and returned, or packaging was damaged or missing hardware. Actual products may have minor scratches and/or dings , minor imperfections or minor wear. Each open box item has been visually inspected by our team. We do NOT test to ensure the item is in working order. These items come at a deep discount so they go fast. If you have any problems with the item please contact us immediately so that we can see what options are available to you. We will not tolerate any communications if you have provided negative feedback before contacting us first. All products are sold as is. Any returns considerations will be assessed on a case by case basis. Returns are not guaranteed! We are not an authorized re-seller for any products. Product Warranty may NOT transfer or be available on any listed products.