Features: Velcro can be removed after use, and curtains can be repurposed after removal; DIY cutting can be done by yourself; if there is dust, just wipe it with a wet towel; with thermal insulation coating, effectively isolating sunlight and ultraviolet rays; The product includes: curtains + Velcro + tape measure + marker + storage bag. Blackout and thermal insulation: the silver coating and the black blackout surface of the blackout roller blind can effectively block sunlight and UV rays and reduce heat in the room. They provide strong blackout and privacy protection, create a pleasant dark sleeping environment and improve sleep quality . Wide range of applications: 4 sizes extra large roof window blackout can be cut freely. It can be used at home, hotels, offices or even caravans. Blackout fabric sold by the metre suitable for any size and shape of windows. Lightweight portable and ready to use, no drilling required, thick Oxford fabric blackout blinds are a better choice than blackout films.