Are your windows not properly C/insulated or are your grilles draughty while they are closed? Then go for this insulating window film! The transparent insulation foil is attached with a Velcro fastener, so you can simply remove it when you want to open the window. A super handy solution to keep your heating costs low. Pros Keeps out cold and draughtsWith Velcro fasteningWindow insulation steps Measure if the plastic fits C)properlyClean the frame for better adhesionCut the Velcro to the correct lengthStick the hook side to the frameStick the other side of the Velcro against itRemove the plastic stripStick the plastic wrap to itCut off any other foil Specifications Format: 100 x 100 cmColour: whiteContents: 1x insulation foil and 2x Velcro roll (2 cm wide) Note: Choose a film that is larger than your window, because of the attachment to your frame.