Beautyhero Blackout Window Film - Privacy Film, Window Insulation Film, Anti-Condensation Film, Smoke Film, Sun Protection, Anti-Condensation, Shatterproof, UV Cut, UV Protection, Water-Applied, Removable, for Bedrooms, Bathrooms, Entrances, Offices Ultra-Blackout & Privacy: This completely blackout film has a visible light transmission rate of 0%, making it an opaque blackout sheet. It's the perfect window film for bedrooms of babies, people with reversed day-night cycles, and those sensitive to light. The excellent privacy effect protects your important privacy simply by applying it to your windows. It also allows you to eliminate curtains, making your room look neater and more spacious. UV Cut & Insulation: In winter, it prevents the heat from the heated room from escaping through the windows. In summer, it effectively cuts heat and suppresses the rise in room temperature, achieving over 99% UV protection. Using this blackout sheet protects your skin from harmful UV rays and prevents fading and deterioration of furniture. Easy to Use & Reusable: Simply peel off the transparent protective film and apply with water; no adhesive is needed. It leaves no trace on the glass and can be reused. Even beginners can easily use it. You can also cut it to the required size according to the size of the glass, making it easy to apply to any size of glass. (Be sure to peel off the protective film; if you don't follow this step, the applied glass film will peel off.) Glass Shatter Prevention & Glass Scratch Prevention: After the application is complete, the static cling type restores the adhesive strength. In the event of typhoons, earthquakes, etc., even if the glass breaks, the fragments will not scatter! This prevents secondary disasters and unforeseen damage from glass fragments. It also prevents scratches on the glass surface caused by carelessness. Energy Saving & Air Conditioner Efficiency Improvement: Creates a comfortable indoor space, blocks outdoor heat (heat insulation), blocks solar heat, and suppresses the inflow of hot air when using air conditioning, improving cooling efficiency. Electricity bills are reduced, and efficiency is slightly improved. It helps save on electricity bills. In summer, by cutting over 99% of infrared rays, it significantly reduces the entry of solar heat. Cooling and heating efficiency is improved. In summer, it suppresses the heat entering the room and helps maintain the cool room temperature from the air conditioner. In winter, it prevents the heat from the room from escaping and prevents the entry of cold air from outside. It's a great value sheet that can be used in all four seasons. Thank you for viewing.