Winter Insulated Window: this window insulation kit is made of thickened PE material, which is 75% thicker than ordinary window insulation, more durable, better insulation effect, tear resistance, wind resistance, good toughness and shrinkage, it has good elasticity, strong tensile force, no deformation, and is waterproof; It can keep indoors warm in winter and cool in summer, and there are few wrinkles during installation, and no heat shrink treatment is required Reusable: for daily use, just wipe with a damp cloth to remove dust; To clean, simply remove the attic door insulation cover from the window and rinse well before installing it back on the window to dry; The material is soft, tough, transparent, and can be folded for easy reuse in the future Easy to Install and Remove: hook and loop, windproof hook and loop fasteners are added to the top and sides of the window insulation for winter for reinforcement, it can adhere well to the frame, easy to install with adhesive loop tape, no drilling tools required, just peel the window can be opened for ventilation by lowering the strap Wide Applications: interior plastic window cover is suitable for most window types such as aluminum window frames, wrought iron grilles, sash windows, casement windows, bathroom windows, attic fans, louver covers, doors, whole house loft ceiling fans, louver seals hood, attic vent; A tip, when measuring your home's window dimensions, include the frame and choose a film that is larger than yours