Beautyhero Blackout Window Film - Privacy Film, Window Insulation Film, Anti-Condensation Film, Smoke Film, Sun Protection, Anti-Condensation, Shatterproof, UV Cut, Ultraviolet 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, those with reversed day-night schedules, and people sensitive to light. The excellent privacy effect protects your important privacy simply by applying it to your windows. Eliminating curtains makes the 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 cut 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, the entry of solar heat is significantly reduced. Cooling and heating efficiency is improved. In summer, it suppresses the heat entering the room and has the effect of maintaining the cool room temperature with air conditioning. In winter, it prevents the heat from the room from escaping and has the effect of suppressing the entry of cold air from the outside. It's a great value sheet that can be used in all four seasons. Thank you for viewing.