This blackout roller blind keeps light out of your room. Its silver coloured backside will reflect incoming heat as well. This makes them the idealchoice for blocking incoming light in any room in your home or office Perfect for the bedroom.The back of the blind iscoated with a thermoplastic silver coloured layer This layer not only completely blocks incoming light, its thermal qualities also keeps your room warmer in the winter and cooler in the summer.Thanks to the included mounting accessories, these blinds are easy to install and operate Either install the blind on wall or ceiling with the included screws and wall plugs or hang the blind from a window ledge