- Customizable DIY Service: In addition to standard sizes, our window insulation set can be tailored to your needs with adjustable width (W), height (H) and opening sizes (M, N). For a bespoke service, contact us via Amazon messaging or email. We will confirm the price and ordering steps, adjust the product to your requested size, and ship it to you. - Weatherproof winter insulation: Seals out wind and cold while helping keep your home cool in summer. Compatible with all window types, including aluminum frames, wrought-iron grilles, sliding windows, and casement windows. Also suitable as door curtains or room dividers for balconies, living rooms, kitchens, bedrooms, and more. - Eco-friendly materials: The set uses EVA bubble film with full edge sealing and double-stitched construction for stable sealing, plus a zipper for easy opening and closing for ventilation. It is highly insulated, windproof, waterproof, cold-resistant, dustproof, energy-saving, condensation-resistant, and reusable. - Multifunctional and practical: The translucent window film provides privacy while allowing light transmission, with strong sealing to prevent dust ingress and reduce external noise. In winter it helps keep the space warm and reduces heat loss; in summer it helps block heat. Helps lower energy bills and improve efficiency.