【Perfect After-Sales Service】 If for any reason you are not completely satisfied with your purchase, or encounter any problems during use, you can click the "contact seller" button to send an email to us, and we will provide you with a satisfactory solution within 12 hours. 【Package includes】 300×145cm blackout blinds, 1* zipper bag,1* cutter,1* 3-meter tape measure, 8 pairs of Velcro,1* positioning pen, and 1* instruction manual. 【100% Blackout】 Blackout blind are carefully crafted with a three-layer construction of thickened polyester fabric. This sturdy design not only ensures complete darkness in any room, but also adds a layer of insulation. The silver coating on the back of the blinds reflects sunlight and greatly reduces incoming heat, making it perfect for keeping your home cool and comfortable during the summer months. 【DIY Cutting】 The window blackout cover sized 300 * 145 cm and fit a wide range of windows, with a cutter included to cut shapes and sizes as desired. For better light-blocking effect, it is recommended to make the cut size slightly larger than the actual requirement. 【Durability and Broad Application】 Made from high-density fabric, our portable blackout blind not only ensure 100% blackout but also offer waterproof qualities, making them suitable for both indoor and outdoor use. Whether you want to enhance your bedroom's sleeping environment, add privacy to your bathroom, or create a sheltered outdoor space, our blinds can meet your needs.