Darkening & Heat InsulationOur blackout roller blind without drilling with silver coating and black blackout fabric effectively block sunlight and UV rays, reduce the heat in the room and provide strong blackout and privacy protection.MaterialThe window blackout roller blind is made of Oxford fabric, the material is waterproof and does not easily leave residue after cutting, easy to carry and ready to use, our blackout roller blinds without drilling are the ideal alternative to blackout film.Easy to installInstall the portable blackout blind in just three steps. 1.measure 2.cut 3.insert . When cutting the blackout blind to size, leave a margin of about 2 cm free so that no light penetrates through the seam edges. Wipe the window clean before use.Darkening Roller Blind KitThe package includes 1 blackout fabric, 12 rectangular fabric patches, 2 round fabric patches, 1 pen, 1 drawstring bag, 1 measuring tape, the kit is rich in accessories to meet your needs.Multiple Uses: Our blackout roller blind fabric can be used to shade windows, protect from UV rays, reduce room heat, protect privacy, etc. They can be used for house windows, car windows, as tablecloths, camping picnic blankets, etc.