Made of 210D Polyester Material: Temporary blackout blinds is made of thick, sturdy but soft fabric materials which block out all lights coming through the window,opaque thermal insulation coating blocks all lights and UV entering the room, It fits perfectly without gaps around the window. Keep your room cooler in summer; warmer in winter. improve sleep quality for baby, children or adults.High Quality PU Nano-Adhesive: Travel blackout curtains with nano tapes, strong sticky, easy to apply and will no adhesive residue on window/frame.leaving no marks at all after removal.Tips: The glass window needs to be wiped clean. In the case of dust, the transparent silicone sticker will fail to stick to it, and it will not stick to the wall with dust. It is recommended.