【100% Ultra-Blackout Sheet! Completely Black & Privacy Protection!】 This 100% ultra-blackout sheet makes it feel like night even during the day! Made with 420D Oxford fabric and silver coating, it achieves a 100% blackout rate. With a visible light transmittance of 0%, it's perfect for those who need to sleep soundly during the day, such as those working night shifts. The completely black sheet also provides excellent privacy, protecting your privacy simply by applying it to your windows. By using it as a substitute for curtains, you can also make your room look neater! 【99% UV Cut Rate & Complete UV Block】 With a 99% UV shielding rate, it reduces fading and deterioration of furniture caused by the afternoon sun. It also suppresses heat conduction, providing excellent heat insulation & heat retention functions, keeping you cool in summer and warm in winter, contributing to energy saving, making it a year-round blackout sheet. The thick fabric is sturdy and durable, and when applied to windows, it can also prevent glass shards from scattering during earthquakes and typhoons! 【Free Cutting! Compatible with Any Window!】 You can freely cut it to fit the shape and size of your windows, accommodating various shapes such as square, round, and arched windows. It can also be applied to window frames, making it compatible with frosted and uneven glass. It's applicable to glass windows in general households, as well as for sun protection and privacy protection in offices, kindergartens, cars, etc. 【Easy Installation Just by Applying! Removable Blackout Sheet】 Installation is complete just by applying the Velcro. Two types of Velcro, a tape measure, and a highlighter pen are also included, and it's easy to apply without water, adhesive, or the need to reapply! When not in use, it can be easily removed without leaving any marks, and you don't have to worry about damaging walls or windows! The sheet is waterproof and water-repellent on both sides, resistant to water and dirt, and can be easily cleaned by wiping with a cloth.