【Effective Window Insulation Kit】Winter window sealing kit for winter wind/cold and prevents heat loss. Made of 4mm thick environmentally friendly PVC bubble wrap, the bubbles are even and full, dense, airtight, waterproof, windproof, warm, heat insulating, noise reducing, dustproof, safe, durable and easy to clean. 【Multifunctional】The transparent window film ensures privacy, lets in light and is very airtight to prevent dust from entering. In winter, keep your room warm and prevent heat loss with our window sealing kit. Keep your room cool in summer. Reduce your electricity bills and save energy. At the same time, the window's thermal insulation layer provides sound insulation and wind protection. [Edge reinforced design] Edge reinforced design, hand-sewn, double-stitched, more stable sealing, better fit, effective heat preservation, long service life, reusable. Thermal curtains can be used on most windows, such as aluminum window frames, wrought iron grilles, sliding windows and hinged windows. Suitable for all rooms, such as kitchen, bedroom, bathroom, living room, dining room and office. [Easy to install and remove] This window film is easy to install. With the included adhesive accessories, the thermal curtain is securely attached to the door/window. It can also be easily removed when no longer needed. You can store it for later use. (Note: The window film can be applied to metal frames and painted wooden frames. The surface to be applied must be clean, flat, smooth and free of paint and dust.) 【Custom size】We offer custom size service. If you cannot find the size you need, you can send us your desired measurements. We will provide you with order information and product prices. Custom widths (30-250 cm) and heights (50-250 cm) are available.