Three-layer window insulation system provides windproofing, warmth, and adjustable ventilation. - Windproof insulation: Outer layer blocks cold drafts effectively while maintaining a cozy indoor atmosphere by converting thermal energy. - Heat storage: Middle layer efficiently captures and stores heat to create an insulated space that retains warmth and can help reduce heating costs. - Practical ventilation: Inner layer can be easily rolled up, allowing fresh air without fully removing the curtains. - Water and dirt resistance: Constructed with two aluminum foil layers for excellent resistance to water, dirt, and moisture, promoting long-lasting cleanliness. Use scenarios - Winter comfort and energy savings: Install on windows in living rooms or bedrooms to reduce drafts and lower heating costs while keeping interiors warm. - Seasonal ventilation without losing insulation: Roll up the inner layer during milder days to enjoy fresh air without sacrificing overall insulation. - Damp or dusty environments: The double aluminum foil layers help resist moisture and dirt, helping to keep window areas cleaner for longer. Notes - Designed to deliver windproofing, heat retention, and easy ventilation in a single three-layer construction. - Suitable for standard window applications where insulation and moisture resistance are needed.